| 5-Methyl-4-isoxazolecarboxylic acid Basic information |
| Product Name: | 5-Methyl-4-isoxazolecarboxylic acid |
| Synonyms: | 5-Methyl-4-isoxazolecarboxylic acid, Tech.;5-methylisoxazole-4-carboxylic acid(SALTDATA: FREE);Methylisoxazole-4-carboxylic;LeflunoMide EP IMpurity D;4-Carboxy-5-methylisoxazole ,4-Carboxy-5-methyl-1,2-oxazole;5-Methylisoxazole-4-carboxylic acid, 99%, 99%;Leflunomide Impurity D;5-Methyl-isoxazol-4-carboxylic acid |
| CAS: | 42831-50-5 |
| MF: | C5H5NO3 |
| MW: | 127.1 |
| EINECS: | 700-400-1 |
| Product Categories: | Intermediates;Intermediates & Fine Chemicals;Acids and Derivatives;Heterocycles;Isoxazoles, Oxadiazoles, Oxazoles;Pharmaceuticals;Carboxylic Acids;Oxazoles, Isoxazoles & Benzoxazoles;Oxazole&Isoxazole;Organic acids;(intermediate of leflunomide);Heterocyclic Compounds;Carboxylic Acids;Oxazoles, Isoxazoles & Benzoxazoles;Building Blocks;Heterocyclic Building Blocks;Isoxazoles |
| Mol File: | 42831-50-5.mol |
| 5-Methyl-4-isoxazolecarboxylic acid Chemical Properties |
| Melting point | 144-148 °C(lit.) |
| Boiling point | 308.3±22.0 °C(Predicted) |
| density | 1.348±0.06 g/cm3(Predicted) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | Solid |
| pka | 2.85±0.25(Predicted) |
| color | White to Pale Brown |
| BRN | 116000 |
| CAS DataBase Reference | 42831-50-5(CAS DataBase Reference) |
| Safety Information |
| Hazard Codes | Xi,F |
| Risk Statements | 36/37/38-37/38-36-10 |
| Safety Statements | 22-26-36/37/39-36-16 |
| WGK Germany | 3 |
| HazardClass | IRRITANT |
| HS Code | 29349990 |
| MSDS Information |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| ALFA | English |
| 5-Methyl-4-isoxazolecarboxylic acid Usage And Synthesis |
| Chemical Properties | Cream to brown Solid |
| Uses | An intermediate for synthesis of Leflunomide (L322750). Herbicidal activities towards Digitaria ciliaris |
| Uses | 5-Methylisoxazole-4-carboxylic Acid (Leflunomide EP Impurity D) is an intermediate for synthesis of Leflunomide (L322750). Herbicidal activities towards Digitaria ciliaris. |
| Flammability and Explosibility | Nonflammable |
| 5-Methyl-4-isoxazolecarboxylic acid Preparation Products And Raw materials |
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