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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

Cefotaxime

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Appearance A white or almost white powder Almost white powder Assay 90.0% m

High purity cefotaxime CAS:63527-52-6

Cas:63527-52-6

Min.Order:1 Gram

FOB Price: $100.0 / 500.0

Type:Manufacturers

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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 Cefotaxime Acid L supplier in China

Cas:63527-52-6

Min.Order:0 Metric Ton

Negotiable

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 Cefotaxime

Cas:63527-52-6

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% Cefotaxime 63527-52-6 GMP Manufacturer

Cas:63527-52-6

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

Cefotaxime

Cas:63527-52-6

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hebei yanxi chemical co.,LTD.

1. We have experience in exporting steroids, as you know, EU places much emphasis on them, and you must find a experienced partner who will assure you; 2.Our company is a professional raw powder factory in China for over 10 y

Chinese Big Factory Supply 99% Purity Cefotaxime Powder Antibacterial

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $5.0 / 10.0

Type:Trading Company

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Leader Biochemical Group

About Product Details

China factory Manufacturer Supply High Quality Cefotaxime CAS 63527-52-6

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $1.0 / 5.0

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

Cefotaxime

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

TIANFUCHEM--63527-52-6--High pUrity Cefotaxime factory price Our company was built in 2009 with an ISO certificate.In the past 10 years, we have grown up as a famous fine chemicals supplier in China And we had established stable business

TIANFUCHEM--63527-52-6--High pUrity Cefotaxime factory price

Cas:63527-52-6

Min.Order:1 Metric Ton

FOB Price: $2000.0

Type:Lab/Research institutions

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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 63527-52-6 with best quality

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam

Cefotaxime CAS63527-52-6

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $7.0 / 10.0

Type:Trading Company

inquiry

Henan Wentao Chemical Product Co., Ltd.

We are leading fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Orga

CefotaximeCAS NO.: 63527-52-6

Cas:63527-52-6

Min.Order:1 Metric Ton

FOB Price: $5.0

Type:Lab/Research institutions

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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

Xi'an Faithful Biotech Co., Ltd.

We are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery

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

Hot sale & hot cake high quality Cefotaxime 63527-52-6 with reasonable price

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $50.0 / 60.0

Type:Trading Company

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Qingdao Beluga Import and Export Co., LTD

Cefotaxime CAS:63527-52-6 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates

Cefotaxime CAS:63527-52-6

Cas:63527-52-6

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

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 etc. 3) OEM/ODM Available;

Cefotaxime Sodium CAS 63527-52-6

Cas:63527-52-6

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Triumph International Development Limilted

Appearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By

Cefotaxime

Cas:63527-52-6

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

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Afine Chemicals Limited

Cefotaxime (INN)is a third-generation cephalosporin antibiotic. Like other third-generation cephalosporins, it has broad spectrum activity against Gra… Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API an

high purity Cefotaxime cas no.63527-52-6

Cas:63527-52-6

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hefei Zhaobo Technology Co., Ltd.

Cefotaxime CAS 63527-52-6 Purity: 99% Min Application: Intermediates Appearance: Powder Package: Bag Delivery: 3-5days Our Advantage & Service 1.Top quality: Using high quality material and establishing a strict quality control syste

Cefotaxime CAS 63527-52-6

Cas:63527-52-6

Min.Order:1 Kilogram

FOB Price: $10.0 / 50.0

Type:Trading Company

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

Cefotaxime

Cas:63527-52-6

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

Cefotaxime

Cas:63527-52-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Cefotaxime CAS NO.63527-52-6

Cas:63527-52-6

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Lingrui Chemical Co.,Ltd.

Cefotaxime (63527-52-6)Appearance:powder Storage:store in a cool dry place and keep away from strong Package:according to customers' requirements Application:in research Transportation:By air(EMS or EUB or FedEx or TNT ect...) or by sea(FOB or CIF or

Cefotaxime (63527-52-6)

Cas:63527-52-6

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

GMP/DMFAppearance:white crystalline powder slight special ordor Package:as client requirement Application:Cephalosporin antibiotic Transportation:Express, Air ,Sea Port:Any port of China

Cefotaxime Sodium

Cas:63527-52-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

TaiChem Taizhou Limited

Established in May 2015, TaiChem Ltd. is initially invested by a British research and development company and started by PhDs back from aboard. The company is registered in China Medical City (CMC), Taizhou, Jiangsu Province, and the production site

Cefotaxime

Cas:63527-52-6

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Siwei Development Group Ltd.

Product name: Cefotaxime Acid CAS No.: 63527-52-6 Molecule Formula:C16H17N5O7S2 Molecule Weight:455.47 Purity: 99.0% Package: 10kg/tin Description:White crystalline powder Manufacture Standards:Enterprise Standard TESTING ITEMS

Lower Price Cefotaxime Acid in stock

Cas:63527-52-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

High purity Cefotaxime

Cas:63527-52-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

Cefotaxime

Cas:63527-52-6

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Synthetic route

(Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate
80756-85-0

(Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
With TEA In dichloromethane at 20℃; for 1h; Substitution;95%
With triethylamine In dichloromethane at 20℃; for 1h;95%
Stage #1: (Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate; 7-Aminocephalosporanic acid With triethylamine In methanol at 0 - 5℃;
Stage #2: With hydrogenchloride In methanol; water at 0 - 5℃; for 1h; pH=2.3 - 2.5;
Stage #1: (Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate; 7-Aminocephalosporanic acid With triethylamine In 1,2-dimethoxyethane at -5 - 0℃;
Stage #2: With hydrogenchloride In 1,2-dimethoxyethane; water for 1h; pH=2.6 - 2.8; Product distribution / selectivity;
diethylthiophosphoryl-(Z)-(2-aminothiazol-4-yl)methoxyimino acetate

diethylthiophosphoryl-(Z)-(2-aminothiazol-4-yl)methoxyimino acetate

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: 7-Aminocephalosporanic acid With N,O-bis-(trimethylsilyl)-acetamide In dichloromethane at 20℃; for 1h;
Stage #2: diethylthiophosphoryl-(Z)-(2-aminothiazol-4-yl)methoxyimino acetate In dichloromethane at 20℃; for 8h;
Stage #3: With sodium hydroxide In dichloromethane; water at 15 - 20℃; pH=7.5 - 7.8;
94.4%
Stage #1: 7-Aminocephalosporanic acid With N,O-bis-(trimethylsilyl)-acetamide In DMF (N,N-dimethyl-formamide) at 20 - 25℃;
Stage #2: diethylthiophosphoryl-(Z)-(2-aminothiazol-4-yl)methoxyimino acetate In DMF (N,N-dimethyl-formamide) at 20℃; for 18h;
93.5%
C21H16N6O3S

C21H16N6O3S

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
With N,O-bis-(trimethylsilyl)-acetamide In acetonitrile at -5 - 0℃; for 1h; Temperature;93.1%
7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

(2-Amino-thiazol-4-yl)-[(Z)-methoxyimino]-acetic acid 4,6-dimethoxy-[1,3,5]triazin-2-yl ester
207725-19-7

(2-Amino-thiazol-4-yl)-[(Z)-methoxyimino]-acetic acid 4,6-dimethoxy-[1,3,5]triazin-2-yl ester

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
With N,O-bis-dimethylsilyl acetamide In acetonitrile at 0 - 5℃; for 1.5h;75.4%
7-[4-bromo-2(Z)-methoxyimino-3-oxobutyramido]-cephalosporanic acid

7-[4-bromo-2(Z)-methoxyimino-3-oxobutyramido]-cephalosporanic acid

thiourea
17356-08-0

thiourea

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: 7-[4-bromo-2(Z)-methoxyimino-3-oxobutyramido]-cephalosporanic acid; thiourea With sodium acetate In dichloromethane; water for 2.5 - 3.5h;
Stage #2: With hydrogenchloride In tetrahydrofuran; water pH=2.8;
40.3%
7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

2-(2-aminothiazol-4-yl)-2-(methoxy)iminoacetic acid
64485-90-1

2-(2-aminothiazol-4-yl)-2-(methoxy)iminoacetic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
(i) DCC, CH2Cl2, (ii) /BRN= 622638/, Et3N, (iii) aq. HCO2H; Multistep reaction;
pyvaloyloxymethyl 7β-<2-(2-aminothiazol-4-yl)-(Z)-methoxyiminoacetamido>-3-acetoxymethyl-3-cephem-4-carboxylate
65243-53-0

pyvaloyloxymethyl 7β-<2-(2-aminothiazol-4-yl)-(Z)-methoxyiminoacetamido>-3-acetoxymethyl-3-cephem-4-carboxylate

A

cefotaxime
63527-52-6

cefotaxime

B

(2R,6R,7R)-3-Acetoxymethyl-7-{2-(2-amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid
126747-48-6

(2R,6R,7R)-3-Acetoxymethyl-7-{2-(2-amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid

C

(2R,6R,7R)-3-Acetoxymethyl-7-{2-(2-amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

(2R,6R,7R)-3-Acetoxymethyl-7-{2-(2-amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

Conditions
ConditionsYield
With water In N,N-dimethyl-formamide at 37℃; Rate constant; phosphate buffer, var. pH;
ethyl 2-(2-aminothiazol-4-yl)-2-(anti)-methoxyiminoacetate
64485-88-7

ethyl 2-(2-aminothiazol-4-yl)-2-(anti)-methoxyiminoacetate

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: Et3N / dimethylformamide / 3 h
2: aq. NaOH / dioxane / 0.5 h / Heating
3: (i) DCC, CH2Cl2, (ii) /BRN= 622638/, Et3N, (iii) aq. HCO2H
View Scheme
(Z)-γ-bromo-β-oxo-α-methoxyiminobutyric acid ethyl ester
65872-39-1

(Z)-γ-bromo-β-oxo-α-methoxyiminobutyric acid ethyl ester

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: ethanol; H2O / 1 h / 20 °C
2: Et3N / dimethylformamide / 3 h
3: aq. NaOH / dioxane / 0.5 h / Heating
4: (i) DCC, CH2Cl2, (ii) /BRN= 622638/, Et3N, (iii) aq. HCO2H
View Scheme
ethyl (Z)-2-(methoxyimino)-2-[2-(triphenylmethyl)-aminothiazol-4-yl]acetate
64485-89-8

ethyl (Z)-2-(methoxyimino)-2-[2-(triphenylmethyl)-aminothiazol-4-yl]acetate

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aq. NaOH / dioxane / 0.5 h / Heating
2: (i) DCC, CH2Cl2, (ii) /BRN= 622638/, Et3N, (iii) aq. HCO2H
View Scheme
C15H16ClN3O8S

C15H16ClN3O8S

thiourea
17356-08-0

thiourea

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: C15H16ClN3O8S; thiourea With triethylamine In tetrahydrofuran; water at 20 - 25℃; for 4h; pH=7.5;
Stage #2: With hydrogenchloride In water at 15 - 20℃; for 0.5h; pH=3 - 4.2;
C15H16ClN3O8S
71754-15-9

C15H16ClN3O8S

thiourea
17356-08-0

thiourea

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: C15H16ClN3O8S; thiourea With sodium acetate In tetrahydrofuran; water at 20℃; for 1h;
Stage #2: With hydrogenchloride In tetrahydrofuran; water at 10℃; for 1h; pH=2.5;
7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid
64486-19-7

7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: 7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid With water; sodium carbonate; thiourea; isopropyl alcohol at 20 - 30℃;
Stage #2: With hydrogenchloride; water In isopropyl alcohol at 20 - 30℃; for 2h; pH=2.7 - 3.0;
(Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate
80756-85-0

(Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

A

cefotaxime
63527-52-6

cefotaxime

B

2-Mercaptobenzothiazole
149-30-4

2-Mercaptobenzothiazole

Conditions
ConditionsYield
Stage #1: (Z)-S-benzo[d]thiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)ethanethioate; 7-Aminocephalosporanic acid With sodium 2-ethylhexanoate In water; acetonitrile at 6 - 8℃; for 12h;
Stage #2: In water; acetonitrile pH=2.5 - 3.0;
4-chloro-2-methoxyimino-3-oxo-butyric acid
111230-59-2

4-chloro-2-methoxyimino-3-oxo-butyric acid

thiourea
17356-08-0

thiourea

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: 4-chloro-2-methoxyimino-3-oxo-butyric acid With phosphorus pentachloride In dichloromethane at -5 - 0℃; for 1h;
Stage #2: 7-Aminocephalosporanic acid With ammonia In water; acetone at -5 - 0℃; for 0.5 - 0.666667h; pH=6.5 - 7;
Stage #3: thiourea With sodium acetate In water; acetone at 18 - 20℃; for 1h;
C13H11N5O2S2

C13H11N5O2S2

7-Aminocephalosporanic acid
957-68-6

7-Aminocephalosporanic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Stage #1: C13H11N5O2S2; 7-Aminocephalosporanic acid With sodium hydrogensulfite; triethylamine In ethanol; dichloromethane; isopropyl alcohol at 5℃; pH=7 - 8;
Stage #2: With hydrogenchloride In water; acetone at 10℃; for 1.5h; pH=2.5; Temperature;
N,O-bis-(trimethylsilyl)-acetamide
10416-59-8

N,O-bis-(trimethylsilyl)-acetamide

D-(-)-2-formyloxy-2-phenylacetyl chloride
57079-45-5

D-(-)-2-formyloxy-2-phenylacetyl chloride

7-amino-3-(4-methylthiazolyl)-3-cephem-4-carboxylic acid

7-amino-3-(4-methylthiazolyl)-3-cephem-4-carboxylic acid

ethyl acetate
141-78-6

ethyl acetate

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
at 20℃;
2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetic acid
91868-79-0

2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetic acid

cefotaxime
63527-52-6

cefotaxime

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1,8-diazabicyclo[5.4.0]undec-7-ene / N,N-dimethyl-formamide / 2.5 h / 2 - 25 °C
2: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 1 h / -5 - 0 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

cefotaxime sodium salt
64485-93-4

cefotaxime sodium salt

Conditions
ConditionsYield
With sodium hydrogencarbonate In ethanol Substitution;95.4%
With sodium isooctanoate; sodium sulfite In water; acetone at 5 - 10℃; for 0.5h;95%
With triethylamine; sodium 2-ethylhexanoic acid In methanol; ethyl acetate88.7%
cefotaxime
63527-52-6

cefotaxime

chloroacetyl chloride
79-04-9

chloroacetyl chloride

7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid
64486-19-7

7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl acetamide at 20℃; for 1h;90.2%
cefotaxime
63527-52-6

cefotaxime

diazodiphenylmethane
908093-98-1

diazodiphenylmethane

benzhydryl (6R,7R,Z)-3-(acetoxymethyl)-7-(2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylate

benzhydryl (6R,7R,Z)-3-(acetoxymethyl)-7-(2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylate

Conditions
ConditionsYield
With toluene-4-sulfonic acid In water; acetonitrile at 20℃; for 0.75h; pH=3; Inert atmosphere;80%
cefotaxime
63527-52-6

cefotaxime

5-[(4-methylquinolin-2-yloxy)methyl]-1,3,4-thiadiazole-2-thiol
239468-67-8

5-[(4-methylquinolin-2-yloxy)methyl]-1,3,4-thiadiazole-2-thiol

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(4-methylquinolin-2-yloxy)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(4-methylquinolin-2-yloxy)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In acetic acid for 0.0333333h; Condensation; microwave irradiation;58%
cefotaxime
63527-52-6

cefotaxime

5-[(quinolin-8-yloxy)methyl]-1,3,4-thiadiazole-2-thiol
239468-65-6

5-[(quinolin-8-yloxy)methyl]-1,3,4-thiadiazole-2-thiol

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(quinolin-8-yloxy)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(quinolin-8-yloxy)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In acetic acid for 0.0166667h; Condensation; microwave irradiation;54%
cefotaxime
63527-52-6

cefotaxime

furane-2-monocarboxylic acid
4741-45-1

furane-2-monocarboxylic acid

ceftiofur
80370-57-6

ceftiofur

Conditions
ConditionsYield
With methanesulfonic acid; sulfuric acid In acetonitrile at 15 - 20℃;54%
With methanesulfonic acid In dichloromethane at 23 - 27℃;47%
With methanesulfonic acid In ethyl acetate at 30℃;47%
cefotaxime
63527-52-6

cefotaxime

5-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-1,3,4-thiadiazole-2-thiol
202116-95-8

5-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-1,3,4-thiadiazole-2-thiol

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In acetic acid for 0.025h; Condensation; microwave irradiation;52%
cefotaxime
63527-52-6

cefotaxime

5-[(tetrazol-1-yl)methyl]-1,3,4-thiadiazole-2-thiol
202116-96-9

5-[(tetrazol-1-yl)methyl]-1,3,4-thiadiazole-2-thiol

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(tetrazol-1-yl)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

7-{[(2-aminothiazol-4-yl)(methoxyimino)acetyl]amino}-3-{[5-[(tetrazol-1-yl)methyl]-1,3,4-thiadiazol-2-ylthio]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In acetic acid for 0.025h; Condensation; microwave irradiation;48%
cefotaxime
63527-52-6

cefotaxime

Vilsmeier reagent
3724-43-4, 149409-22-3

Vilsmeier reagent

C33H34N10O14S4

C33H34N10O14S4

Conditions
ConditionsYield
at 35℃; for 2.5h;35.8%
cefotaxime
63527-52-6

cefotaxime

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide
24589-78-4

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide

C19H25N5O7S2Si
104498-86-4

C19H25N5O7S2Si

Conditions
ConditionsYield
In dichloromethane at 40℃;
cefotaxime
63527-52-6

cefotaxime

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide
24589-78-4

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide

C20H31N5O6S2Si2

C20H31N5O6S2Si2

Conditions
ConditionsYield
In dichloromethane for 1h;
cefotaxime
63527-52-6

cefotaxime

(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-bromomethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-bromomethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
In dichloromethane
cefotaxime
63527-52-6

cefotaxime

(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-iodomethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid
86070-92-0

(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-iodomethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Conditions
ConditionsYield
In dichloromethane
With trimethylsilyl iodide; N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide In dichloromethane at 20℃; for 0.5h; Substitution;
cefotaxime
63527-52-6

cefotaxime

2,3-cyclopentenopyridine
533-37-9

2,3-cyclopentenopyridine

Conditions
ConditionsYield
With potassium iodide In water at 70℃;
cefotaxime
63527-52-6

cefotaxime

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide
24589-78-4

N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide

7β-<2-(2-aminothiazol-4yl)-2-(Z)-methoximinoacetamide>-3-iodomethyl-2-<(trimethylsilyloxy)carbonyl>cephalosporin
83421-24-3

7β-<2-(2-aminothiazol-4yl)-2-(Z)-methoximinoacetamide>-3-iodomethyl-2-<(trimethylsilyloxy)carbonyl>cephalosporin

Conditions
ConditionsYield
Stage #1: cefotaxime; N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide In dichloromethane for 1h; Iodination;
Stage #2: With trimethylsilyl iodide In dichloromethane for 0.5h; Condensation;
cefotaxime
63527-52-6

cefotaxime

cefpodoxime proxetil
87239-81-4

cefpodoxime proxetil

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 90.2 percent / N,N-dimethyl-acetamide / 1 h / 20 °C
2: 65 percent / aq. NaHCO3; CaCl2*2H2O / 1.25 h / 70 °C
3: 2.4 g / dicyclohexylamine / N,N-dimethyl-acetamide / 0.75 h / 0 - 5 °C
4: 1.44 g / thiourea / N,N-dimethyl-acetamide / 3 h / 20 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-methoxymethyl-3-cephem-4-carboxylic acid
82618-67-5

7β-[2-(2-chloroacetamidothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-methoxymethyl-3-cephem-4-carboxylic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 90.2 percent / N,N-dimethyl-acetamide / 1 h / 20 °C
2: 65 percent / aq. NaHCO3; CaCl2*2H2O / 1.25 h / 70 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

(6R,7R)-7-{2-[2-(2-Chloro-acetylamino)-thiazol-4-yl]-2-[(Z)-methoxyimino]-acetylamino}-3-methoxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 1-isopropoxycarbonyloxy-ethyl ester
620962-96-1

(6R,7R)-7-{2-[2-(2-Chloro-acetylamino)-thiazol-4-yl]-2-[(Z)-methoxyimino]-acetylamino}-3-methoxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 1-isopropoxycarbonyloxy-ethyl ester

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 90.2 percent / N,N-dimethyl-acetamide / 1 h / 20 °C
2: 65 percent / aq. NaHCO3; CaCl2*2H2O / 1.25 h / 70 °C
3: 2.4 g / dicyclohexylamine / N,N-dimethyl-acetamide / 0.75 h / 0 - 5 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

C19H21N7O5S3

C19H21N7O5S3

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: MSTFA; TMSI / CH2Cl2 / 0.5 h / 20 °C
2: 0.10 g / MSTFA / acetonitrile; tetrahydrofuran / 20 h / 20 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

C20H23N7O5S3

C20H23N7O5S3

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: MSTFA; TMSI / CH2Cl2 / 0.5 h / 20 °C
2: MSTFA / acetonitrile; tetrahydrofuran / 20 h / 20 °C
View Scheme
cefotaxime
63527-52-6

cefotaxime

C22H20N8O5S2

C22H20N8O5S2

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: CH2Cl2 / 1 h
1.2: Me3SiI / CH2Cl2 / 0.5 h
2.1: acetonitrile; tetrahydrofuran / 16 h / 20 °C
View Scheme

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