Dayangchem's 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. DayangChem can provide different quantities
Cas:33641-15-5
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiry1. 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
Cas:33641-15-5
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryOur 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
Cas:33641-15-5
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryOur advantages: 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be sent out in 24 hours after payment.Tracking number available 2) Secure and disc
Cas:33641-15-5
Min.Order:1 Kilogram
FOB Price: $150.0 / 200.0
Type:Trading Company
inquiryTIANFUCHEM--33641-15-5--High purity 5-Hydroxy-1-methylpyrazole 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 s
Cas:33641-15-5
Min.Order:1 Metric Ton
FOB Price: $2000.0
Type:Lab/Research institutions
inquiryWITH 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
Cas:33641-15-5
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiry1.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
Cas:33641-15-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry5-Hydroxy-1-methylpyrazole CAS:33641-15-5 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 organi
Cas:33641-15-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryHello, 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
Cas:33641-15-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products with competi
Cas:33641-15-5
Min.Order:10 Gram
Negotiable
Type:Lab/Research institutions
inquiryHebei Mojin Biotechnology Co., Ltd, Our company is a professional chemical raw materials and chemical reagents research and development production enterprises. We have several production line,So we can control the lowest price. We also have several
Cas:33641-15-5
Min.Order:25 Gram
FOB Price: $90.0 / 100.0
Type:Trading Company
inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryAppearance:white or yellowish white flaky crystal 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:Sea/
Cas:33641-15-5
Min.Order:100 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:33641-15-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryJ&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
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryZibo 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
Cas:33641-15-5
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryGMP 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,
Cas:33641-15-5
Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryHunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as
Cas:33641-15-5
Min.Order:0 Metric Ton
Negotiable
Type:Manufacturers
inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
Shandong Mopai Biotechnology 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 chemicals. W
Cas:33641-15-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquirystock,low price,high quality,high purity,good sevice Appearance:33641-15-5 Storage:Preserve In Well-Closed, Light-Resistant and Tight Containers. Store In Cool & Dry Place Package:5g,10g,100g,1kg,5kg.... Application:R&D Transportation:by land,by ai
Cas:33641-15-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquirySAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in
Cas:33641-15-5
Min.Order:0 Metric Ton
Negotiable
Type:Lab/Research institutions
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryGOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
Stock products, own laboratoryAppearance:Off-white to light yellow crystal Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirywith high qualityAppearance:white powder Storage:Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Package:25kg/drum Application:as intermediates Transportation:by courier, air or sea Port:At any port from China
Cas:33641-15-5
Min.Order:0
Negotiable
Type:Manufacturers
inquiryAcmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
Cas:33641-15-5
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiry1-methyl-5-hydroxypyrazol-4-carboxylic acid ethyl ester
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 1-methyl-5-hydroxypyrazol-4-carboxylic acid ethyl ester With sodium hydroxide In water at 40℃; for 3h; Stage #2: With hydrogenchloride for 3h; Reflux; | 98% |
at 120℃; for 6h; Temperature; |
methyl 3-methoxyprop-2-enoate
methylhydrazine
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
In methanol at 0℃; for 4.66667h; Heating / reflux; | 73% |
In water at 10℃; Temperature; | 69.6% |
In methanol for 8h; Reflux; Inert atmosphere; | |
In methanol; water for 2h; Cooling with ice; |
β-isobutoxyacryl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With hydrogenchloride; triethylamine In tetrahydrofuran |
methyl (2E)-3-methoxy-2-propenoate
methylhydrazine
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
In methanol at 90℃; for 12 - 18h; |
methyl crotonate
methylhydrazine
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
In methanol for 16h; Reflux; Inert atmosphere; |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With sulfuric acid at 65℃; for 8h; Temperature; | 18.6 g |
1,4-dioxane
3-(3-bromo-2-methyl-6-(methylsulfonyl)phenyl)-4,5-dihydroisoxazole
1-methyl-5-hydroxypyrazole
topramezone
Conditions | Yield |
---|---|
With carbon monoxide; potassium carbonate; triethylamine; triphenylphosphine; palladium(II) chloride In water | 100% |
With hydrogenchloride; potassium carbonate; triethylamine; bis(triphenylphosphine)palladium(II) dichloride In water |
4-methylsulphonyl-2-nitrobenzoyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With triethylamine In 1,4-dioxane at 5 - 40℃; for 2h; | 96% |
2-methyl-3-ethylsulfinyl-4-methylsulfonylbenzoic acid
1-methyl-5-hydroxypyrazole
[3-(ethylsulfinyl)-2-methyl-4-(methylsulfonyl)phenyl](5-hydroxy-1-methyl-1H-pyrazol-4-yl)methanone
Conditions | Yield |
---|---|
With pyridine; thionyl chloride In ethyl acetate at -25 - 0℃; Inert atmosphere; | 91% |
2-methyl-3-(methylsulfinyl)-4-(trifluoromethyl)benzoic acid
1-methyl-5-hydroxypyrazole
(5-hydroxy-1-methyl-1H-pyrazol-4-yl)[2-methyl-3-(methyl-sulfinyl)-4-(trifluoromethyl)phenyl]methanone
Conditions | Yield |
---|---|
With pyridine; thionyl chloride In ethyl acetate at -25 - 0℃; Inert atmosphere; | 90.7% |
p-toluenesulfonyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With sodium hydroxide In tetrahydrofuran; water at 0 - 20℃; for 2h; Green chemistry; | 88% |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With triethylamine In 1,2-dichloro-ethane at -5 - 20℃; | 86.9% |
2-methoxy-3-methylsulfinyl-4-trifluoromethylbenzoic acid
1-methyl-5-hydroxypyrazole
(5-hydroxy-1-methyl-1H-pyrazol-4-yl)[2-methoxy-3-(methylsulfinyl)-4-(trifluoromethyl)phenyl]methanone
Conditions | Yield |
---|---|
With thionyl chloride; 3-Methylpyridine In ethyl acetate at -25 - -20℃; Product distribution / selectivity; Inert atmosphere; | 86.5% |
2,4-dichlorobenzoyl chloride
1-methyl-5-hydroxypyrazole
1-methyl-5-(2,4-dichlorobenzoyloxy)-pyrazole
Conditions | Yield |
---|---|
With sodium hydroxide In chloroform | 86% |
3-(3-bromo-2-methyl-6-(methylsulfonyl)phenyl)-4,5-dihydroisoxazole
formyl radical
1-methyl-5-hydroxypyrazole
topramezone
Conditions | Yield |
---|---|
Stage #1: 3-(3-bromo-2-methyl-6-(methylsulfonyl)phenyl)-4,5-dihydroisoxazole With potassium carbonate In 1,4-dioxane Reflux; Stage #2: 1-methyl-5-hydroxypyrazole With triphenylphosphine; sodium iodide In 1,4-dioxane at 60℃; for 0.5h; Stage #3: formyl radical With palladium on activated charcoal In 1,4-dioxane at 120℃; under 11251.1 Torr; for 20h; Reagent/catalyst; Temperature; | 84.4% |
3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid
1-methyl-5-hydroxypyrazole
topramezone
Conditions | Yield |
---|---|
Stage #1: 3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid With pyridine; thionyl chloride In benzene for 3h; Reflux; Stage #2: 1-methyl-5-hydroxypyrazole With triethylamine In 1,4-dioxane at 20℃; for 3h; Stage #3: With potassium carbonate for 6h; Reflux; | 81.46% |
Stage #1: 3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid With pyridine; thionyl chloride In toluene for 3h; Reflux; Stage #2: 1-methyl-5-hydroxypyrazole With triethylamine In 1,4-dioxane at 20℃; for 3h; | 80.5% |
Stage #1: 3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid With thionyl chloride for 2h; Reflux; Stage #2: With triethylamine In 1,2-dichloro-ethane at 20 - 30℃; for 0.5h; Stage #3: 1-methyl-5-hydroxypyrazole In 1,2-dichloro-ethane for 4h; Reflux; | 20.87% |
pentafluorobenzenesulonyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 0 - 20℃; | 81% |
3-(3-bromo-2-methyl-6-(methylsulfonyl)phenyl)-4,5-dihydroisoxazole
carbon monoxide
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With potassium carbonate; triethylamine; triphenylphosphine; palladium dichloride In 1,4-dioxane at 120℃; under 4125.41 - 4875.49 Torr; for 40h; Autoclave; | 81% |
Conditions | Yield |
---|---|
Stage #1: C18H16N2O5 With thionyl chloride In tetrahydrofuran at 20 - 80℃; for 1.5h; Stage #2: 1-methyl-5-hydroxypyrazole With triethylamine In dichloromethane for 0.5h; | 80% |
N,N-dimethyl-formamide
1-methyl-5-hydroxypyrazole
5-chloro-1-methyl-1H-pyrazole-4-carbaldehyde
Conditions | Yield |
---|---|
Stage #1: N,N-dimethyl-formamide; 1-methyl-5-hydroxypyrazole With trichlorophosphate at 80℃; for 6.16667h; Stage #2: With sodium hydrogencarbonate In water | 77% |
With trichlorophosphate In methanol at 0 - 80℃; for 7h; Inert atmosphere; | 12.87 g |
With trichlorophosphate at 0 - 80℃; for 12h; Inert atmosphere; | 16.31 g |
3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoic acid With thionyl chloride for 3h; Reflux; Stage #2: 1-methyl-5-hydroxypyrazole With triethylamine In tetrahydrofuran at 20℃; for 3h; Stage #3: With potassium carbonate In tetrahydrofuran for 2h; Reflux; | 76.2% |
methanesulfonyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With triethylamine In ethyl acetate at 0 - 20℃; for 0.166667h; Green chemistry; | 74% |
With triethylamine In tetrahydrofuran at 0℃; for 2h; | 7.04 g |
trimethoxonium tetrafluoroborate
1-methyl-5-hydroxypyrazole
1,2-dimethyl-1,2-dihydropyrazol-3-on
Conditions | Yield |
---|---|
In nitromethane at 20℃; for 24h; | 71% |
p-methoxybenzyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
In methanol at 20℃; for 24h; | A 70% B 5% |
9-methoxy-6-chloroformyl-3a,4-dihydro-3H-chromeno[4,3-c]isoxazoline
1-methyl-5-hydroxypyrazole
(5-hydroxy-1-methyl-1H-pyrazol-4-yl)-(9-methoxy-3a,4-dihydro-3H-chromeno[4,3-c]isoxazolin-6-yl)methanone
Conditions | Yield |
---|---|
Stage #1: 9-methoxy-6-chloroformyl-3a,4-dihydro-3H-chromeno[4,3-c]isoxazoline; 1-methyl-5-hydroxypyrazole With trimethylamine In acetonitrile at 0 - 20℃; Stage #2: With potassium carbonate In 1,4-dioxane for 7h; Heating / reflux; | 68% |
Conditions | Yield |
---|---|
With di-isopropyl azodicarboxylate; triphenylphosphine In tetrahydrofuran at -60 - -30℃; for 19h; | 66% |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 3-(2-fluoro-4-methylphenyl)-2-methyl-4-oxo-3,4-dihydroquinazoline-6-carboxylic acid With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 1h; Stage #2: 1-methyl-5-hydroxypyrazole With dmap In dichloromethane at 20℃; | 65% |
(2-trimethylethylsilylethoxy)methyl chloride
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 1-methyl-5-hydroxypyrazole With potassium carbonate In acetonitrile at 20℃; for 0.5h; Stage #2: (2-trimethylethylsilylethoxy)methyl chloride In acetonitrile at 20℃; for 14h; | 63% |
With potassium carbonate In acetonitrile at 20℃; for 16h; | 10 g |
2-chloro-6-methyl-isonicotinic acid methyl ester
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; sodium carbonate at 130℃; for 16h; Inert atmosphere; | 61% |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 3-(4-chloro-2-methylphenyl)-2-methyl-4-oxo-3,4-dihydroquinazoline-6-carboxylic acid With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 1h; Stage #2: 1-methyl-5-hydroxypyrazole With dmap In dichloromethane at 20℃; | 60% |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine In dichloromethane at 25℃; for 4h; | 59% |
2-chloro-4-methoxy-3-(1-oxothianylideneamino)benzoic acid
2-hydroxy-2-methylpropanenitrile
1-methyl-5-hydroxypyrazole
2-chloro-1-[(5-hydroxy-1-methylpyrazole-4-yl)carbonyl]-4-methoxy-3-(1-oxothianylideneamino)benzene
Conditions | Yield |
---|---|
Stage #1: 2-chloro-4-methoxy-3-(1-oxothianylideneamino)benzoic acid With 1,1'-carbonyldiimidazole In chloroform at 20℃; for 1h; Stage #2: 1-methyl-5-hydroxypyrazole With triethylamine In chloroform for 1h; Reflux; Stage #3: 2-hydroxy-2-methylpropanenitrile With triethylamine In acetonitrile at 20℃; | 55% |
1-methyl-5-hydroxypyrazole
Conditions | Yield |
---|---|
Stage #1: 3-(4-chlorophenyl)-2-methyl-4-oxo-3,4-dihydroquinazoline-6-carboxylic acid With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 1h; Stage #2: 1-methyl-5-hydroxypyrazole With dmap In dichloromethane at 20℃; | 53% |
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