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Hebei Sankai Chemical Technology Co., Ltd

Hebei Sankai Chemical Technology Co., LTD. is located in xingtai City, Hebei Province, China. It is a biotechnology enterprise engaged in the research, development, production and sales of animal and plant extracts, cosmetics, pharmaceutical raw mate

Factory Sells Powder 57-13-6 57-13-6 In Stock 57-13-6 Manufacturer

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $5.0 / 10.0

Type:Trading Company

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Changchun Artel lmport and Export trade company

Urea 46%, industrial grade, automotive grade, AdBlue Urea prill on sales Appearance White particles have no mechanical impurities. Total Nitrogen 46.2% Mass fraction of biuret 0.80% Moisture 0.33% Iron 0.00005% Alkalinity (based on NH

AdBlue Urea, automotive grade Urea N46%, AUS32 UREA

Cas:57-13-6

Min.Order:40 Metric Ton

FOB Price: $520.0 / 560.0

Type:Trading Company

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

Sulfur Coated Urea fertilizer

Cas:57-13-6

Min.Order:10 Gram

FOB Price: $5.0

Type:Lab/Research institutions

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Shandong Zhimao New Materials Co., Ltd.

Our Advantages: 1. Any inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. OEM/ODM Available. 5. Reasonable & competitive price, fast lead time. 6. Sample is

High Quality Nitrogen Urea

Cas:57-13-6

Min.Order:25 Metric Ton

Negotiable

Type:Trading Company

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Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

The factory price Urea (urea) 57-13-6

Cas:57-13-6

Min.Order:500 Metric Ton

FOB Price: $350.0 / 395.0

Type:Trading Company

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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Urea supplier in China

Cas:57-13-6

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; ...... Appearance:White crystalline powder Storage:2-8°C Package:50kg/bag A

Good quality nitrogen fertilizer Urea CAS 57-13-6 with low price

Cas:57-13-6

Min.Order:10 Metric Ton

FOB Price: $250.0

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

Hebei Yanxi Chemical Co., Ltd. is a professional research, development and production of lead acetate benzene acetamide enterprise backbone members by local well-known entrepreneurs and professional senior engineers in the party's "low car

Best package Urea

Cas:57-13-6

Min.Order:1 Metric Ton

FOB Price: $1.0 / 2.0

Type:Manufacturers

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EAST CHEMSOURCES LIMITED

Urea CAS NO. 57-13-6;37955-36-5 Other name Carbamide; Urea solution; Urea, USP Grade Carbamide, USP Grade; Urea, MB Grade (1.12007); Urea (Medical); Urea-12C; 10-Hydroxy-2-trans-Decenoic Acid; Carbonyl di

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $2.0 / 3.0

Type:Manufacturers

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply Urea

Cas:57-13-6

Min.Order:1

Negotiable

Type:Other

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

Factory Price API 99% Urea 57-13-6 GMP Manufacturer

Cas:57-13-6

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

Good Price Urea Agricultural Fertilizer CAS 57-13-6

Cas:57-13-6

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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Enke Pharma-tech Co.,Ltd. (Cangzhou, China )

CH4N2OCangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api, int

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $5.0

Type:Manufacturers

inquiry

Shanghai Seasonsgreen Chemical Co.,Ltd

Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu

High purity supply Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

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Shanxi Zorui Biotechnology Co.Ltd.

Zorui combines R&D, production and sales into its operations, While continuously providing high-quality raw materials, we also provide and optimize technical solutions for customers to achieve mutual benefit. We adhere to the "quality, integ

Prilled / Granular Urea 46% / Urea 46 Fertilizer For Plant Growth CAS 57-13-6

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Other

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Chemwill Asia Co., Ltd.

Highly quality and large production Factory Chemwill Asia co.,Ltd is one of the leading manufacturer in CHINA. Our main production base is located in Xuzhou industry park. We produce a wide range of organics includin

CHemwill - Urea Factory

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

TIANFU-CHEM_ high purity 99% min Pharmaceutical grade/cosmetic grade Urea, CAS:57-13-6

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

New production CAS 57-13-6 with best quality

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Product Name: Urea Synonyms: Analysis of pure urea;Fluorouracil EP ImpurityG;Usp grade urea crystallization;USP grade urea;Reagent grade moisturizing urea;furanyl);Reagent grade urea;Cosmetics moisturizing

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

inquiry

Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

Urea 57-13-6

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present

Solubilization agent Urea with CAS:57-13-6

Cas:57-13-6

Min.Order:1 Metric Ton

FOB Price: $42.0 / 60.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

Beluga chemical professional supply High quality Urea CAS57-13-6 1. Beluga Chemical has a professional RESEARCH and development team and strong technical force to ensure technical support and research capabilities. 2. Made in China and exported t

High quality Urea CAS57-13-6

Cas:57-13-6

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

Sulfur Coated Urea fertilizer

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Lonwin Chemical Group Limited

Urea CAS: 57-13-6 Specification ProName: Best package Urea CAS NO.57-13-6,high ... CasNo: 57-13-6 Molecular Formula: C2H6 Appearance: white powder Application: medical DeliveryTime: 3 days after payment

Factory supply Urea

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $20.0 / 30.0

Type:Lab/Research institutions

inquiry

Wuhan Zenuo Biological Medicine Technology Co Ltd

Product Name: Urea Synonyms: Fluorouracil EP ImpurityG;furanyl)?;UREA XTL;Urea Manufacturer;Fluorouracil Impurity 7(Fluorouracil EP Impurity G);Urea for car;Urea - CAS 57-13-6 - Calbiochem;Urea, Molecular Biology Grade - CAS 57-13-6 - Calbiochem

Urea big supplier with lower price

Cas:57-13-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter

Urea

Cas:57-13-6

Min.Order:1 Kilogram

FOB Price: $1.0 / 100000.0

Type:Lab/Research institutions

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

Urea

Cas:57-13-6

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

Urea

Cas:57-13-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

ammonium cyanate
22981-32-4

ammonium cyanate

urea
57-13-6

urea

Conditions
ConditionsYield
In ethanol at 32°C;100%
In ethanol at 32°C;100%
In water Kinetics; izomerization; equil. react.;
S,S-dimethyl dithiocarbonate
868-84-8

S,S-dimethyl dithiocarbonate

urea
57-13-6

urea

Conditions
ConditionsYield
With ammonia; water at 60℃; for 2h;100%
carbon monoxide
201230-82-2

carbon monoxide

ammonia
7664-41-7

ammonia

sulfur
7704-34-9

sulfur

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

urea
57-13-6

urea

Conditions
ConditionsYield
In methanol; water molar ratio of CO:S = 1.36; 35 min; at 110°C; 60% excess of NH3; 75% CH3OH;A n/a
B 96.2%
In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH;A n/a
B 96.2%
In methanol; water molar ratio of NH3:S:CO = 1.4 : 1 : 1.36; 35 min; at 110°C; 54% CH3OH;A n/a
B 96.3%
thiourea
17356-08-0

thiourea

urea
57-13-6

urea

Conditions
ConditionsYield
With bismuth(III) nitrate In acetonitrile for 0.25h; Heating;96%
With Oxone for 0.0833333h;96%
With 3-carboxypyridinium chlorochromate In acetonitrile for 0.0333333h; Product distribution; Further Variations:; Reagents; Temperatures; without microwave irradiation; solvent-free; microwave irradiation;95%
Difluoroacetic acid
381-73-7

Difluoroacetic acid

3,3-diphenylpropan-1-ol
20017-67-8

3,3-diphenylpropan-1-ol

A

difluoroacetic acid, O-(3,3-diphenyl-propyl) ester

difluoroacetic acid, O-(3,3-diphenyl-propyl) ester

B

urea
57-13-6

urea

Conditions
ConditionsYield
With dmap; dicyclohexyl-carbodiimide In diethyl ether at 0 - 20℃;A 96%
B n/a
nitrourea
556-89-8

nitrourea

ammonia
7664-41-7

ammonia

A

urea
57-13-6

urea

B

nitramine
7782-94-7

nitramine

Conditions
ConditionsYield
In ammonia at -33°C;A 91%
B n/a
tetrafluoroboric acid diethyl ether
67969-82-8

tetrafluoroboric acid diethyl ether

F6P(1-)*C25H43Fe2N2OS2(1+)

F6P(1-)*C25H43Fe2N2OS2(1+)

acetonitrile
75-05-8

acetonitrile

A

F6P(1-)*C26H44Fe2N4S2(2+)*BF4(1-)

F6P(1-)*C26H44Fe2N4S2(2+)*BF4(1-)

B

urea
57-13-6

urea

Conditions
ConditionsYield
In acetone at 20℃; for 2h; Inert atmosphere; Schlenk technique;A 90%
B 90%
sodium methylate
124-41-4

sodium methylate

4-ureidocarbonylpyrazole
80981-23-3

4-ureidocarbonylpyrazole

A

methyl pyrazole-4-carboxylate
51105-90-9

methyl pyrazole-4-carboxylate

B

urea
57-13-6

urea

Conditions
ConditionsYield
In methanol for 2h; Heating;A 89%
B n/a
carbon oxide sulfide
463-58-1

carbon oxide sulfide

ammonia
7664-41-7

ammonia

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

urea
57-13-6

urea

Conditions
ConditionsYield
1.5-fold molar excess of NH3; at 105°C;A n/a
B 88%
In ethanol at a temp. near the m.p. of urea; using abs. ethanol;A n/a
B 76%
In ammonia at a temp. near the m.p. of urea;A n/a
B 64%
iron pentacarbonyl
13463-40-6

iron pentacarbonyl

ammonia
7664-41-7

ammonia

A

2NH4(1+)*{Fe(CO)4}(2-)=(NH4)2{Fe(CO)4}

2NH4(1+)*{Fe(CO)4}(2-)=(NH4)2{Fe(CO)4}

B

urea
57-13-6

urea

Conditions
ConditionsYield
With ammonium chloride In ammonia at exclusion of light, air and moisture; 20°C; 5 d;A n/a
B 85%
In ammonia at exclusion of light, air and moisture; 20°C; 5 d;A n/a
B 77%
In ammonia at exclusion of light, air and moisture; 20°C; 1 d;A n/a
B 31%
In ammonia at exclusion of light, air and moisture; 20°C; 14 d;A n/a
B >99
CYANAMID
420-04-2

CYANAMID

urea
57-13-6

urea

Conditions
ConditionsYield
With [OsCl2(η6-p-cymene)(PMe2OH)]; water at 40℃; for 0.25h; Reagent/catalyst; Inert atmosphere; Sealed tube;80%
With sulfuric acid
ammonium oxythiocarbamate
16687-42-6

ammonium oxythiocarbamate

A

ammonium cyanate
22981-32-4

ammonium cyanate

B

sulfur
7704-34-9

sulfur

C

urea
57-13-6

urea

Conditions
ConditionsYield
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.;A n/a
B n/a
C 80%
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.;A n/a
B n/a
C 80%
In ethanol storing in air; elimination of the ppt.; crystn. S by HgO at low temp.;A n/a
B n/a
C 80%
carbon dioxide
124-38-9

carbon dioxide

ammonia
7664-41-7

ammonia

urea
57-13-6

urea

Conditions
ConditionsYield
at molar ratio of NH3:CO2 = 8;77%
High Pressure; at 175 until 180°C; at a pressure of 175 at; molar ratio of NH3:CO2 = 6; liquid phase;76%
at molar ratio of NH3:CO2 = 6;72%
propan-1-ol
71-23-8

propan-1-ol

carbon monoxide
201230-82-2

carbon monoxide

1-amino-3-(dimethylamino)propane
109-55-7

1-amino-3-(dimethylamino)propane

A

propamocarb
24579-73-5

propamocarb

B

urea
57-13-6

urea

Conditions
ConditionsYield
With oxygen; N,N-dimethyl-formamide; sodium iodide; palladium dichloride at 125℃; under 30003 Torr; for 2h; Pressure; Reagent/catalyst; Autoclave; Inert atmosphere;A 75.6%
B 5.7%
nitro-carboxamide

nitro-carboxamide

A

5-Amino-4-chloro-2-[8'-benzyl-8'-azabicyclo-[3.2.1]octane-3'β-carboxamido]-anisole

5-Amino-4-chloro-2-[8'-benzyl-8'-azabicyclo-[3.2.1]octane-3'β-carboxamido]-anisole

B

urea
57-13-6

urea

Conditions
ConditionsYield
aluminum nickel In ethanolA 73%
B n/a
uric Acid
69-93-2

uric Acid

A

pyrimidine-2,4,5,6(1H,3H)-tetraone
61066-33-9, 61066-34-0, 61066-35-1, 61127-23-9

pyrimidine-2,4,5,6(1H,3H)-tetraone

B

urea
57-13-6

urea

Conditions
ConditionsYield
With rose bengal; sodium hydroxide In glycerol for 36h; Irradiation;A 72.18%
B n/a
ethyl 4-(4-chlorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxopyrimidine-5-carboxylate
154866-92-9

ethyl 4-(4-chlorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxopyrimidine-5-carboxylate

A

(4-chlorobenzylidene)hydrazine
52372-80-2

(4-chlorobenzylidene)hydrazine

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 70%
B n/a
C n/a
D 55%
5-carboethoxy-6-methyl-4-(4-methylphenyl)-1H-pyrimidin-2-thione
185023-34-1

5-carboethoxy-6-methyl-4-(4-methylphenyl)-1H-pyrimidin-2-thione

A

4-methylbenzaldehyde hydrazone
52693-87-5

4-methylbenzaldehyde hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 69%
B n/a
C n/a
D 55%
ammonia
7664-41-7

ammonia

polycarbonate

polycarbonate

A

BPA
80-05-7

BPA

B

urea
57-13-6

urea

Conditions
ConditionsYield
In ethanol; water at 80℃; for 12h; Green chemistry;A n/a
B 68%
5-ethoxycarbonyl-4-phenyl-6-methyl-3,4-dihydropyrimidine-2(1H)-thione
123043-88-9, 33458-26-3

5-ethoxycarbonyl-4-phenyl-6-methyl-3,4-dihydropyrimidine-2(1H)-thione

A

benzaldehyde, hydrazone
5281-18-5

benzaldehyde, hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 67%
B n/a
C n/a
D 55%
propan-1-ol
71-23-8

propan-1-ol

carbon monoxide
201230-82-2

carbon monoxide

N-butylamine
109-73-9

N-butylamine

A

urea
57-13-6

urea

B

n-propyl N-n-butyl carbamate
100823-18-5

n-propyl N-n-butyl carbamate

Conditions
ConditionsYield
With oxygen; triethylamine; sodium iodide; palladium dichloride at 165℃; Reagent/catalyst; Autoclave; Inert atmosphere;A 66%
B 8%
5-(ethoxycarbonyl)-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-thione
113697-57-7

5-(ethoxycarbonyl)-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-thione

A

p-anisaldehyde hydrazone
5953-85-5

p-anisaldehyde hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 66%
B n/a
C n/a
D 55%
4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
5948-71-0

4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one

A

(4-chlorobenzylidene)hydrazine
52372-80-2

(4-chlorobenzylidene)hydrazine

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 62%
B n/a
C n/a
D 55%
ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate
123237-03-6, 5395-36-8

ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate

A

benzaldehyde, hydrazone
5281-18-5

benzaldehyde, hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 62%
B n/a
C n/a
D 55%
carbon dioxide
124-38-9

carbon dioxide

ammonia
7664-41-7

ammonia

water
7732-18-5

water

urea
57-13-6

urea

Conditions
ConditionsYield
at 190℃; under 112511 Torr;61%
ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate
161374-07-8

ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate

A

p-anisaldehyde hydrazone
5953-85-5

p-anisaldehyde hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 60%
B n/a
C n/a
D 55%
ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
299949-24-9

ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate

A

4-methylbenzaldehyde hydrazone
52693-87-5

4-methylbenzaldehyde hydrazone

B

thiourea
17356-08-0

thiourea

C

urea
57-13-6

urea

D

5-hydroxy-3-methylpyrazole
132712-71-1, 4344-87-0, 145091-87-8

5-hydroxy-3-methylpyrazole

Conditions
ConditionsYield
With hydrazine hydrate In neat (no solvent) for 6h; Reflux;A 58%
B n/a
C n/a
D 55%
ammonium carbamate

ammonium carbamate

A

water
7732-18-5

water

B

urea
57-13-6

urea

Conditions
ConditionsYield
Kinetics; at 200°C;A n/a
B 55%
Kinetics; at 200°C;A n/a
B 55%
Kinetics; at 140°C;A n/a
B 43%
uric Acid
69-93-2

uric Acid

A

5,6-dihydroxypyrimidine-2,4(1H,3H)-dione
102636-37-3

5,6-dihydroxypyrimidine-2,4(1H,3H)-dione

B

urea
57-13-6

urea

Conditions
ConditionsYield
With rose bengal In acetic acid; glycerol for 38h; Irradiation;A 45.11%
B n/a
maleic anhydride
108-31-6

maleic anhydride

urea
57-13-6

urea

maleuric acid
105-61-3

maleuric acid

Conditions
ConditionsYield
With acetic acid at 50℃; for 12h;100%
With acetic acid
at 80℃;
at 100 - 105℃;
With acetic acid
ethyl acetoacetate
141-97-9

ethyl acetoacetate

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

urea
57-13-6

urea

ethyl 6-methyl-4-(4-nitrophenyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate
123371-45-9

ethyl 6-methyl-4-(4-nitrophenyl)-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate

Conditions
ConditionsYield
With 1-methylimidazole based ionic liquid terminated dendritic moiety prepared from 2,4,6-trichloro-1,3,5-triazine and 1,3-diaminopropane immobilized on 3-aminopropyltriethoxysilane functionalized bentonite In ethanol; water at 50℃; for 3h; Biginelli Pyrimidone Synthesis; Green chemistry;100%
With guanidine In neat (no solvent) at 80℃; for 2h; Biginelli Pyrimidone Synthesis;99%
With 1,4-diazaniumbicyclo[2.2.2]octane diacetate In neat (no solvent) at 80℃; for 0.0833333h; Biginelli Pyrimidone Synthesis; Green chemistry;99%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

benzaldehyde
100-52-7

benzaldehyde

urea
57-13-6

urea

ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate
123237-03-6, 5395-36-8

ethyl 6-methyl-4-phenyl-3,4-dihydropyrimidin-2(1H)-one-5-carboxylate

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With Cl7Fe2(1-)*C6H9N2O2(1+); C8H15N2(1+)*C4H12B(1-) at 80℃; for 2h; Reagent/catalyst; Biginelli Pyrimidone Synthesis;99%
With guanidine In neat (no solvent) at 80℃; for 2h; Biginelli Pyrimidone Synthesis;99%
dimethylglyoxal
431-03-8

dimethylglyoxal

urea
57-13-6

urea

tetrahydro-3a,6a-dimethylimidazo<4,5-d>imidazole-2,5-(1H,3H)-dione
28115-25-5

tetrahydro-3a,6a-dimethylimidazo<4,5-d>imidazole-2,5-(1H,3H)-dione

Conditions
ConditionsYield
With H3PW12O40 In methanol at 20℃; for 5.5h;100%
With 1-hydroxyethylene-(1,1-diphosphonic acid) In water at 80℃; for 1h; Green chemistry;95%
With hydrogenchloride In water at 20℃; for 12h;76%
3-amino-4-hydroxytoluene
95-84-1

3-amino-4-hydroxytoluene

urea
57-13-6

urea

5-methylbenzo[d]oxazol-2(3H)-one
22876-15-9

5-methylbenzo[d]oxazol-2(3H)-one

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 145 - 150℃; for 3.5h;100%
at 144.85 - 149.85℃; for 4h;59.69%
In N,N-dimethyl-formamide for 5h; Carbonylation; Heating;55%
urea
57-13-6

urea

hydroxy-phenyl-acetic acid ethyl ester
774-40-3, 4358-88-7

hydroxy-phenyl-acetic acid ethyl ester

5-phenyloxazolidine-2,4-dione
5841-63-4

5-phenyloxazolidine-2,4-dione

Conditions
ConditionsYield
With sodium ethanolate; sodium hydride In ethanol at 0℃; for 2.5h; Reflux;100%
With sodium ethanolate In ethanol at 0℃; for 4h; Reflux;17.04%
With sodium methylate Hydrolysieren des Reaktionsprodukts;
urea
57-13-6

urea

2-Amino-4-chlorobenzoic acid
89-77-0

2-Amino-4-chlorobenzoic acid

7-chloroquinazoline-2,4-dione
13165-35-0

7-chloroquinazoline-2,4-dione

Conditions
ConditionsYield
at 200℃; for 1h;100%
at 200℃; for 2h;85%
With sodium hydroxide In water for 120h; Heating;33%
urea
57-13-6

urea

urea, monosodium salt
29878-39-5

urea, monosodium salt

Conditions
ConditionsYield
With sodium hydride; toluene at 25 - 90℃; for 1.5h; Reagent/catalyst;100%
With sodium methylate In methanol; 5,5-dimethyl-1,3-cyclohexadiene at 120℃;93%
With sodium methylate In methanol; 5,5-dimethyl-1,3-cyclohexadiene at 120℃;93%
With ammonia; sodium
ethyl acetoacetate
141-97-9

ethyl acetoacetate

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

urea
57-13-6

urea

ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate
161374-07-8

ethyl 4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one-5-carboxylate

Conditions
ConditionsYield
With piperidine In ethanol for 4h; Heating;100%
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With CuCl2*2H2O for 0.025h; Biginelli condensation; microwave irradiation;99%
1-(2-hydroxyphenyl)-3-(4-methoxyphenyl)-2-propen-1-one
3327-24-0

1-(2-hydroxyphenyl)-3-(4-methoxyphenyl)-2-propen-1-one

urea
57-13-6

urea

2-oxo-4-(o-hydroxyphenyl)-6-(p-methoxyphenyl)-1,3,6-trihydro-pyrimidine

2-oxo-4-(o-hydroxyphenyl)-6-(p-methoxyphenyl)-1,3,6-trihydro-pyrimidine

Conditions
ConditionsYield
With sulfuric acid In ethanol for 8h; Heating;100%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

4-chlorobenzaldehyde
104-88-1

4-chlorobenzaldehyde

urea
57-13-6

urea

4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
5948-71-0

4-(4-chlorophenyl)-5-(ethoxycarbonyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With [1-(3-sulfonic acid)]propyl-3-methylimidazolium hydrogen sulfate In ethanol at 80℃; for 3h; Time; Biginelli Pyrimidone Synthesis;99%
Stage #1: ethyl acetoacetate; 4-chlorobenzaldehyde With secondary amine linked triazine and pyrene containing microporous organic polymer at 40 - 80℃; for 0.5h;
Stage #2: urea for 2h; Biginelli Pyrimidone Synthesis; Reflux;
99%
4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

acetoacetic acid methyl ester
105-45-3

acetoacetic acid methyl ester

urea
57-13-6

urea

5-methoxycarbonyl-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one
205999-87-7

5-methoxycarbonyl-4-(4-methoxyphenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one

Conditions
ConditionsYield
With sulfuric acid; copper(l) chloride In methanol Biginelli Pyrimidone Synthesis; Reflux; Inert atmosphere;100%
With ytterbium(III) triflate at 100℃; for 0.333333h; Biginelli reaction;99%
With calcium chloride In ethanol for 2h; Biginelli reaction; Heating;98%
4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

urea
57-13-6

urea

ethyl propanoylacetate
4949-44-4

ethyl propanoylacetate

ethyl 6-ethyl-4-(4-methoxyphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

ethyl 6-ethyl-4-(4-methoxyphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With Aliquat 336; sodium hydroxide In water at 100℃; for 0.75h; Reagent/catalyst; Solvent; Temperature; Time;91%
With zinc(II) oxide In water for 0.416667h; Biginelli Pyrimidone Synthesis;86%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

urea
57-13-6

urea

ortho-bromobenzaldehyde
6630-33-7

ortho-bromobenzaldehyde

ethyl 4-(2-bromophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

ethyl 4-(2-bromophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With ytterbium(III) triflate at 100℃; for 0.666667h; Biginelli reaction;97%
With 2,2,2-trifluoroethanol at 80℃; Biginelli pyrimidine synthesis;94%
4-methyl-benzaldehyde
104-87-0

4-methyl-benzaldehyde

ethyl acetoacetate
141-97-9

ethyl acetoacetate

urea
57-13-6

urea

ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate
299949-24-9

ethyl 6-methyl-2-oxo-4-p-tolyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
polystyrene-methylimidazolium(1+)*PF6(1-) In acetic acid at 100℃; for 2h;99%
With indium(III) bromide In ethanol for 7h; Biginelli condensation; Heating;98%
2-methyl-benzyl alcohol
89-95-2

2-methyl-benzyl alcohol

ethyl acetoacetate
141-97-9

ethyl acetoacetate

urea
57-13-6

urea

ethyl 4-(2-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate
5948-68-5

ethyl 4-(2-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Conditions
ConditionsYield
With piperidine In ethanol for 4h; Heating;100%
With 3-ethoxycarbonylmethyl-1-methylimidazolium hydrogen sulfate at 80℃; for 0.25h; Biginelli reaction;92%
With In(OSO2CF3)3 for 0.183333h; Biginelli reaction; microwave irradiation;91%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

1-naphthaldehyde
66-77-3

1-naphthaldehyde

urea
57-13-6

urea

6-methyl-4-naphthalen-1-yl-2-oxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester
219814-93-4, 1032574-17-6

6-methyl-4-naphthalen-1-yl-2-oxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
With copper doped mesoporous silica MCM-41 supported dual acidic ionic liquid-HSO4 In ethanol at 80℃; for 1h; Biginelli Pyrimidone Synthesis;97%
Stage #1: 1-naphthaldehyde; urea With hydrogenchloride In tetrahydrofuran; water at 67℃; for 1h; Biginelli Pyrimidone Synthesis; Green chemistry;
Stage #2: ethyl acetoacetate With N,N′-(cyclohexane-1,2-diyl)bis(3,6-dichloropicolinamide) In tetrahydrofuran; water at 67℃; for 5h; Biginelli Pyrimidone Synthesis; Green chemistry;
95%
indan-1,2,3-trione hydrate
485-47-2

indan-1,2,3-trione hydrate

urea
57-13-6

urea

3a,8a-dihydroxy-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione
22431-00-1

3a,8a-dihydroxy-1,3,3a,8a-tetrahydroindeno[1,2-d]imidazole-2,8-dione

Conditions
ConditionsYield
at 80℃; for 1h;100%
In water at 20℃; for 0.833333h; Green chemistry;98%
In water at 50 - 60℃;93%
urea
57-13-6

urea

nitrourea
556-89-8

nitrourea

Conditions
ConditionsYield
With nitric acid for 2h;100%
With nitric acid at 20℃; for 2h; Neat (no solvent);100%
With nitric acid at 20℃; for 2h;100%
3-(4-nitrophenyl)-2-oxopropanoic acid
38335-24-9

3-(4-nitrophenyl)-2-oxopropanoic acid

benzaldehyde
100-52-7

benzaldehyde

urea
57-13-6

urea

5-(4-nitro-phenyl)-2-oxo-6-phenyl-1,2,3,6-tetrahydro-pyrimidine-4-carboxylic acid

5-(4-nitro-phenyl)-2-oxo-6-phenyl-1,2,3,6-tetrahydro-pyrimidine-4-carboxylic acid

Conditions
ConditionsYield
With methanesulfonic acid In ethanol for 24h; Biginelli reaction; Heating;100%
urea
57-13-6

urea

Triphenylphosphine oxide
791-28-6

Triphenylphosphine oxide

2,2,2-triphenyl-1H-1,3,2,λ5-diazaphosphotidin-4-one

2,2,2-triphenyl-1H-1,3,2,λ5-diazaphosphotidin-4-one

Conditions
ConditionsYield
at 95 - 100℃; for 4h;100%
methyl 3-amino-4-formylbenzoate
212322-17-3

methyl 3-amino-4-formylbenzoate

urea
57-13-6

urea

methyl 2-hydroxy-quinazoline-7-carboxylate
953039-78-6

methyl 2-hydroxy-quinazoline-7-carboxylate

Conditions
ConditionsYield
at 145℃; for 16h;100%
1-(2-amino-4-methoxyphenyl)ethanone
42465-53-2

1-(2-amino-4-methoxyphenyl)ethanone

urea
57-13-6

urea

7-methoxy-4-methyl-quinazolin-2-ol
37528-39-5

7-methoxy-4-methyl-quinazolin-2-ol

Conditions
ConditionsYield
With acetic acid at 100℃; for 16h;100%
1-(2-amino-3-methoxyphenyl)ethanone
42465-54-3

1-(2-amino-3-methoxyphenyl)ethanone

urea
57-13-6

urea

8-methoxy-4-methyl-quinazolin-2-ol
953039-91-3

8-methoxy-4-methyl-quinazolin-2-ol

Conditions
ConditionsYield
With acetic acid at 100℃; for 16h;100%
ethyl acetoacetate
141-97-9

ethyl acetoacetate

urea
57-13-6

urea

4-(Methylthio)benzaldehyde
3446-89-7

4-(Methylthio)benzaldehyde

ethyl 6-methyl-4-[4-(methylsulfanyl)phenyl]-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate
423737-44-4

ethyl 6-methyl-4-[4-(methylsulfanyl)phenyl]-2-oxo-1,2,3,4-tetrahydro-5-pyrimidinecarboxylate

Conditions
ConditionsYield
With copper(II) bis(trifluoromethanesulfonate) In ethanol at 100℃; for 1h; Biginelli reaction; Microwave irradiation; Inert atmosphere;100%
Wells-Dawson heteropolyacid catalyst at 80℃; for 1.5h; Biginelli reaction;92%
With 25,26,27,28-terahydroxycalix[4]arene-5,11,7,23-tetrasulfonic acid In ethanol for 8h; Biginelli reaction; Reflux;92%
C20H8N2O4

C20H8N2O4

urea
57-13-6

urea

zinc(II) chloride
7646-85-7

zinc(II) chloride

C80H32N8O16Zn

C80H32N8O16Zn

Conditions
ConditionsYield
With ammonium molibdate; 1,8-diazabicyclo[5.4.0]undec-7-ene at 240℃; for 3h;100%
(2R)-2-hydroxy-2-(3-methylphenyl)propanoic acid methyl ester
877681-24-8

(2R)-2-hydroxy-2-(3-methylphenyl)propanoic acid methyl ester

urea
57-13-6

urea

(5R)-5-methyl-5-(3-methylphenyl)oxazolidine-2,4-dione
875542-02-2

(5R)-5-methyl-5-(3-methylphenyl)oxazolidine-2,4-dione

Conditions
ConditionsYield
With sodium ethanolate In ethanol at 95℃;100%
With sodium ethanolate In ethanol Heating / reflux;
With sodium ethanolate In ethanol at 95℃; Heating / reflux;
5-Amino-1-(2-phenylethyl)-1H-pyrazole-4-carboxylic acid
443107-13-9

5-Amino-1-(2-phenylethyl)-1H-pyrazole-4-carboxylic acid

urea
57-13-6

urea

C13H12N4O2
443107-17-3

C13H12N4O2

Conditions
ConditionsYield
at 180℃;100%
choline chloride
67-48-1

choline chloride

urea
57-13-6

urea

urea/choline chloride eutectic salt

urea/choline chloride eutectic salt

Conditions
ConditionsYield
at 70 - 80℃; for 0.333333h;100%
at 120℃; for 0.333333h; Neat (no solvent);
at 74℃;
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