5-Methyl-4-isoxazolecarboxylic acid

Modify Date: 2024-01-02 20:29:13

5-Methyl-4-isoxazolecarboxylic acid Structure
5-Methyl-4-isoxazolecarboxylic acid structure
Common Name 5-Methyl-4-isoxazolecarboxylic acid
CAS Number 42831-50-5 Molecular Weight 127.098
Density 1.3±0.1 g/cm3 Boiling Point 308.3±22.0 °C at 760 mmHg
Molecular Formula C5H5NO3 Melting Point 144-148 °C(lit.)
MSDS N/A Flash Point 140.3±22.3 °C

 Names

Name 5-Methylisoxazole-4-carboxylic Acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.3±0.1 g/cm3
Boiling Point 308.3±22.0 °C at 760 mmHg
Melting Point 144-148 °C(lit.)
Molecular Formula C5H5NO3
Molecular Weight 127.098
Flash Point 140.3±22.3 °C
Exact Mass 127.026939
PSA 63.33000
LogP 0.22
Vapour Pressure 0.0±0.7 mmHg at 25°C
Index of Refraction 1.514

 Safety Information

Hazard Codes Xi:Irritant;
Risk Phrases R36/37/38
Safety Phrases S22-S26-S36/37/39-S36
WGK Germany 3
HS Code 2934999090

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

T5NOJ C1 DVQ
4-Isoxazolecarboxylic acid, 5-methyl-
5-Methylisoxazole-4-carboxylic acid
5-Methyl-4-isoxazolecarboxylic acid
5-Methyl-1,2-oxazole-4-carboxylic acid
MFCD00955655
Leflunomide Impurity 4