ChemicalBook > Product Catalog > Pharmaceutical intermediates > Bulk Drug Intermediates > 5-Methyl-4-isoxazolecarboxylic acid
5-Methyl-4-isoxazolecarboxylic acid
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
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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)
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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
- Language:English Provider:SigmaAldrich
- Language:English Provider:ALFA
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5-Methyl-4-isoxazolecarboxylic acid Usage And Synthesis
Chemical Properties
Cream to brown Solid
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
Non flammable
5-Methyl-4-isoxazolecarboxylic acidSupplier
J & K SCIENTIFIC LTD.
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- 010-82848833 400-666-7788
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- 4006608290; 18621169109
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Alfa Aesar
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- 400-6106006
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5-Methyl-4-isoxazolecarboxylic acid(42831-50-5)Related Product Information
- Methyl acrylate
- Methyl acetate
- Bensulfuron methyl
- 2-(Trifluoromethyl)benzoic acid
- 4-(Aminomethyl)benzoic acid
- m-Toluic acid
- o-Toluic acid
- 4-(Chloromethyl)benzoic acid
- Kresoxim-methyl
- 4-Bromomethylbenzoic acid
- p-Toluic acid
- Thiophanate-methyl
- Sulfamethoxazole
- Methylparaben
- 5-Methylisoxazole
- Methyl
- A77 1726
- Leflunomide 3-Isomer