5-Methyl-4-isoxazolecarboxylic acid

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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

Ethyl 5-methylisoxazole-4-carboxylate
2-Dimethylaminomethylen-acetessigsaeureethylester
Ethyl (2E)-2-(ethoxymethylene)-3-oxobutanoate
(5-Methyl-Isoxazol-4-Yl)Methanol
Ethyl 2-formyl-3-oxobutanoate

DownStream

Leflunomide
4-Isoxazolecarbonylchloride, 5-methyl-
(5-methyl-1,2-oxazol-4-yl)-piperidin-1-ylmethanone

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%

Related Compounds

5-methyl-4-isoxazolecarboxylic acid chloride
3-(4-Fluorophenyl)-5-methyl-4-isoxazolecarboxylic acid
3-(2-CHLOROPHENYL)-5-METHYL-4-ISOXAZOLECARBOXYLIC ACID
3-(4-METHOXYPHENYL)-5-METHYL-4-ISOXAZOLECARBOXYLIC ACID
3-(2-CHLOROPHENYL)-5-METHYL-4-ISOXAZOLECARBOXYLIC ACID CHLORIDE
3-(9'-anthracenyl)-5-methyl-4-isoxazolecarboxylic acid ethyl ester
(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(1H-indol-5-yl)methanone
3-(2-(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)-2-oxoethyl)-5,6-dimethylpyrimidin-4(3H)-one
(3-((5-Chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(furan-3-yl)methanone
(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(1-methyl-3-(thiophen-2-yl)-1H-pyrazol-5-yl)methanone
Benzyl (2-(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)-2-oxoethyl)carbamate
1-(3-((5-Chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)-2-(2-methoxyphenyl)ethanone
(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(tetrahydro-2H-pyran-4-yl)methanone
(3-((5-Chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(4,5,6,7-tetrahydrobenzo[d]isoxazol-3-yl)methanone
(3-((5-Chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)(5-(pyridin-3-yl)isoxazol-3-yl)methanone
(E)-3-(4-chlorophenyl)-1-(3-((5-chloropyrimidin-2-yl)oxy)pyrrolidin-1-yl)prop-2-en-1-one

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