5-Methyl-4-isoxazolecarboxylic acid

Names

[ Name ]:
5-Methyl-4-isoxazolecarboxylic acid

[Synonym ]:
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

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

MSDS

Click to get detail MSDS

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

Precursor & DownStream

Precursor

DownStream

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%