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42831-50-5

42831-50-5 structure
42831-50-5 structure
  • Name: 5-Methyl-4-isoxazolecarboxylic acid
  • Chemical Name: 5-Methylisoxazole-4-carboxylic Acid
  • CAS Number: 42831-50-5
  • Molecular Formula: C5H5NO3
  • Molecular Weight: 127.098
  • Create Date: 2018-04-06 08:00:00
  • Modify Date: 2025-08-23 18:08:46
Name 5-Methylisoxazole-4-carboxylic Acid
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
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
Hazard Codes Xi:Irritant;
Risk Phrases R36/37/38
Safety Phrases S22-S26-S36/37/39-S36
WGK Germany 3
HS Code 2934999090
HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
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