5-Methyl-1,2-oxazole-4-carboxylic acid

BGC Id:	534135877824
CAS No:	42831-50-5
Synonyms:	5-methylisoxazole-4-carboxylic ; leflunomide impurity d ; timtec-bb sbb005909 ; 5-methyl-4-isoxasolecarboxylic acid ; 4-isoxazolecarboxylic acid,5-methyl ; leflunomide ep impurity d ; 5-methyl-4-isoxazolecarboxylic acid ; 5-methylisoxazole-4-carboxylic acid ; methylisoxazole-4-carboxylic ; 5-methyl-isoxazol-4-carboxylic acid
Molecular Formula:	C5H5NO3
Molecular Weight:	127.1
EINECS:

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Synonyms:

5-methylisoxazole-4-carboxylic ; leflunomide impurity d ; timtec-bb sbb005909 ; 5-methyl-4-isoxasolecarboxylic acid ; 4-isoxazolecarboxylic acid,5-methyl ; leflunomide ep impurity d ; 5-methyl-4-isoxazolecarboxylic acid ; 5-methylisoxazole-4-carboxylic acid ; methylisoxazole-4-carboxylic ; 5-methyl-isoxazol-4-carboxylic 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.)

Safety Information

Hazard Symbols: Xi, F

Europe standard Hazard pictograms, code and definition

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:

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

In addition to the providers presented here for 5-Methyl-1,2-oxazole-4-carboxylic acid with the CAS number 42831-50-5, there are other 87 providers with slightly different product names available for this CAS number.

Leflunomide EP Impurity D

+2 additional providers that we know from the past

5-Methyl-4-isoxazolecarboxylic acid

5-Methylisoxazole-4-carboxylic acid