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5-Methyl-4-isoxazolecarboxylic acid

BGC Id:690932966428
CAS No:42831-50-5
Synonyms:5-methyl-4-isoxasolecarboxylic acid ; 5-methylisoxazole-4-carboxylic acid ; leflunomide ep impurity d ; leflunomide impurity d ; methylisoxazole-4-carboxylic ; 4-isoxazolecarboxylic acid,5-methyl ; timtec-bb sbb005909 ; 5-methylisoxazole-4-carboxylic ; 5-methyl-isoxazol-4-carboxylic acid ; 5-methyl-4-isoxazolecarboxylic acid
Molecular Formula:C5H5NO3
Molecular Weight:127.1
EINECS:
Structural Formula

Verified providers in 2025

The following 12 notable providers have been checked and can be recommended.
Chemical-Suppliers
Leap Chem
Molecular Formula: C5H5NO3 Molecular Weight: 127.1 Hazard Symbols: Xi,F WGKGermany: 3 HS Code: 29349990

The last intensive check and update was carried out on 2025/09/17.

Identify

Synonyms:
5-methyl-4-isoxasolecarboxylic acid ; 5-methylisoxazole-4-carboxylic acid ; leflunomide ep impurity d ; leflunomide impurity d ; methylisoxazole-4-carboxylic ; 4-isoxazolecarboxylic acid,5-methyl ; timtec-bb sbb005909 ; 5-methylisoxazole-4-carboxylic ; 5-methyl-isoxazol-4-carboxylic acid ; 5-methyl-4-isoxazolecarboxylic acid
CAS:
42831-50-5
EINECS:
Molecular Formula:
C5H5NO3
MDL:
MFCD00955655

Properties

Molecular Weight:
127.1 g·mol−1
Melting point:
144-148 °C(lit.)
download Download Molfile for :
5-Methylisoxazole-4-carboxylic Acid

Suppliers

Simagchem Corporation

Company type: Bulk chemical producer
Your partner in China for chemicals business. Expertize in supplies and sources of fine, specialty, pharmaceutical chemicals and intermediates. WE offer high quality products and JIT services with instant market intelligence in China, custom synthesis in our 3 production sites, famous principals as Brenntag, Univar,S inopec, Grace, Petrobras, DKSH, Formitex, Evonik, Merck, TCI, Sanofi, Chemo with creditable reputation and business cooperation. We are supplier of trans,trans-4-(4-Fluorophenyl)-4'-propylbicyclohexyl.
Country: P.R.China   Phone: +86 592 2680 277   Telefax: +86 592 2680 237

Xiamen Hisunny Chemical Co., Ltd.

Company type: Leading producer
Country: P.R.China
Phone: +86-592-3327115
Telefax: +86-592-5823596
Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop producing and selling high quality intermediates, Fine chemicals and Specialty Chemicals. We could give you: 1.Best quality in your requirement 2.Competitive price in China market 3.mature Technical support 4.Professional logistic support All we want is win-win business. Methyl pyrazine-2-carboxylate will be also provided by us. Send yr. inquiries, you will get it!

H&Z Industry Co.,Ltd

H&Z Industry Co.,Ltd is a large reliable and professional manufacturer of chemical materials and pharmaceutical intermediate. With about 10 years experiences in this field, now we are a capable provider of customized product, and we can provide gram level to ton level of products. What we can give to customers: thoughtful services, high-quality products, competitive price, Looking forward building long-term cooperative relationships with our business partners. We are seller of 2'-Bromo-4'-fluoroacetanilide.
Country: P.R.China
Phone: +86 13583185792
Telefax: +86 531 88905468

Xingrui Industry Co., Limited

Company type: Leading producer
Xingrui Industry CO., LTD. We are seller of Prezatide copper acetate. is a professional manufacturing enterprise integrating R&D, production and sales. The products involved fine chemicals, pharmaceutical intermediates, dye intermediates, cosmetic raw materials and so on. The company is ranked among the outstanding producers in the fine chemical industry. Xingrui Industry always strive to be the most reliable partner of our customers, and strive to build a customer-trusted, socially respected, world-class fine chemi ...
Country: P.R.China   Phone: +86-531-88980365   Telefax: +86-531-88980365

Hangzhou Meite Industry Co., Ltd (Hangzhou Meite Chemical Co., Ltd)

Company type: Producer
Country: P.R.China
Phone: +86 571 88026825
Telefax: +86 571 88282557
Hangzhou Meite Industry Co., Ltd. is an international high-tech enterprise founded in 1998, specialized in R&D and manufacture on intermediates, medicines, agrochemical, dyestuff, flavor, fragrance, cosmetic, natural extracts series products. We have an efficient R&D centre, get a strong technical support from Zhejiang University of Technology and Institute of Chemistry, Wuhan Branch, Chinese Academy of Sciences. We are supplier of Dichloro(1,5-cyclooctadiene)palladium(II). Our factory Hangzhou Meite Chemical Co.,Ltd. is located in Fi ...

Finetech Industry Limited

Finetech Industry Limited is a company in England,which specializing in developing, manufacturing and marketing fine organic compounds and intermediates for the pharmaceutical industry. Methyl nicotinate is also served by Finetech Industry Limited. Most of our products were exported to the North America, Europe and Oceania. Our factory is in China,we supply Fluorochemicals, Pyrimidines, Pyridines, Amines, Nitriles, Carboxylic Acids or Ester, Phenols or Alcohols, Aldehydes, Piperidines, Piperazines, Pyrazines, Boric Acids, Amino Acids, ...
Company type: Producer
Country: P.R.China
Phone: +86-27-8746 5837
Telefax: +86-27-8777 2287

Dayang Chem (Hangzhou) Co.,Ltd.

Company type: Leading producer
Hangzhou DayangChem Co. Ltd is a comprehensive entity which specializes in development, production and trade of pharmaceutical, agrochemical and dyestuff intermediates as well as some special type reagents. We have an own factory and share enterprises. We act also as agent of many chemical factories and promote their products to the international market at very competitive price. We take "Credi first, Clients supreme" as our aim. Additionally 4-(2-Aminoethyl)oxyindole hydrochloride is supplied by us. We expect to cooperate with more partners in ...
Country: P.R.China   Phone: +86-571-88938639   Telefax: +86-571-8893-8652

Nantong Xindao Biotech Ltd

Company type: Leading producer
Country: P.R.China
Phone: +86 19033786557
XINDAO is a world leading biochemical company formed by a professional team.The company specializes in the production, development and sales of animal health, crop science, nutrition and health care, skin care raw materials, fine chemicals and other products. At present, more than 300 kinds of products can be mass produced, which are widely used in chemical industry, health, agriculture, animal husbandry, biochemical research and other high-end fields. XINDAO pays attention ...

Capot Chemical Co., Ltd.

Welcome to Capotchem • Established in 1996 ,Capot Chemical Co.,Ltd is a fine organics manufacturing facility which located in Hangzhou,P.R.China. We produce a wide range of organics, especially fluorine, boronic acids, amino acids, unnatural amino acids, peptide, cross linkers, organocatalysts, chiral building blocks, heterocyclic compounds and other active pharmaceutical ingredients compounds. We are certified to the ISO 9001:2000 Standards, have a safety management syste ...
Company type: Leading producer
Country: P.R.China
Phone: +86-571-85586718
Telefax: +86-571-85864795

Xiamen Equation Chemical Co.,Ltd

Company type: Bulk chemical producer
Welcome to Equation chemical, your reliable partner in China as an important supplier of bulk specialty chemicals for industry & life science. We are supplier of D-Glucal. We are committed to provide experienced high quality product and JIT performance to benefit our customers.
Country: P.R.China   Phone: +86 592 6515854   Telefax: +86 592 6515854

Leap Chem Co., Ltd

Company type: Bulk and laboratory supplier
Country: P.R.China
Phone: +852-30606658
LEAPChem, a specialized fine chemicals supplier for research, development and production. LEAPChem provides nearly 50,000 rare and innovative chemical products to support the evolving needs of our customers in research & bulk manufacturing activities. As a highly customer-oriented enterprise, we are committed to providing high-quality customer services and products to our global customers in a cost-effective and efficient manner. Our client list includes many major pharmac ...

Anhui Senrise Technology Co., Ltd.

Welcome to Senrise Technology, where innovation meets chemistry. Established in 2010 and headquartered in the vibrant city of Shanghai, we take pride in being a leading provider of over 450,000 chemicals under our brand name, 3ASenrise. Since our inception, Senrise has been dedicated to pushing the boundaries of chemical innovation. Over the years, we have honed our expertise in research chemicals, custom synthesis, and scaled-up production, empowering us to deliver tailor ...
Company type: Leading producer
Country: P.R.China
Phone: +86 13699286009
Telefax: +86 13248271319

Safety Information

Hazard Classes:
irritant
Hazardous Substances Data:
Non-Regulated Material ¹
Risk Codes:
36/37/38-37/38-36-10 (R)
Safety Codes:
22-26-36/37/39-36-16 (S)
WGK Germany:
3

What other providers are available for CAS 42831-50-5?

In addition to the providers presented here for 5-Methyl-4-isoxazolecarboxylic acid with the CAS number 42831-50-5, there are other 44 providers with slightly different product names available for this CAS number.

+2 additional providers that we know from the past
V&V Pharma Industries | Simagchem Corporation | Hangzhou Verychem Science & Technology Co., Ltd. | Hangzhou Trylead Chemical Technology Co., Ltd. | Carbone Scientific Co., Ltd. | AK Scientific, Inc. | BLD Pharmatech Ltd | BuGuCh & Partners +32 additional providers that we know from the past
+1 additional providers that we know from the past




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