5-Methyl-4-isoxazolecarboxylic acid

Product Name: 5-Methyl-4-isoxazolecarboxylic acid
CAS No.: 42831-50-5
Chemical Name: 5-Methyl-4-isoxazolecarboxylic acid
Synonyms: 5-METHYLISOXAZOLE-4-CARBOXYLIC ACID;TIMTEC-BB SBB005909;Leflunomide Impurity D;Lefluonamide Impurity D;LeflunoMide EP IMpurity D;Leflunomide impurities1343;Methylisoxazole-4-carboxylic;5-Methyl-4-isoxazolecarboxyl;5-METHYLISOXAZOLE-4-CARBOXYLIC;5-methylisoxazole-4-formic acid
CBNumber: CB8342928
Molecular Formula: C5H5NO3
Formula Weight: 127.1
MOL File: 42831-50-5.mol

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5-Methyl-4-isoxazolecarboxylic acid Property

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

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

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 633771
Product name: 5-Methylisoxazole-4-carboxylic acid
Purity: 97%
Packaging: 10g
Price: $162
Updated: 2024/03/01

Sigma-Aldrich

Product number: 633771
Product name: 5-Methylisoxazole-4-carboxylic acid
Purity: 97%
Packaging: 1g
Price: $34.7
Updated: 2023/06/20

TCI Chemical

Product number: M1740
Product name: 5-Methylisoxazole-4-carboxylic Acid
Purity: >98.0%(T)(HPLC)
Packaging: 5g
Price: $17
Updated: 2024/03/01

TCI Chemical

Product number: M1740
Product name: 5-Methylisoxazole-4-carboxylic Acid
Purity: >98.0%(T)(HPLC)
Packaging: 25g
Price: $56
Updated: 2024/03/01

Alfa Aesar

Product number: L14628
Product name: 5-Methylisoxazole-4-carboxylic acid, 98+%
Packaging: 5g
Price: $83.2
Updated: 2021/12/16

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5-Methyl-4-isoxazolecarboxylic acid Chemical Properties,Usage,Production

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 acid Preparation Products And Raw materials

Raw materials

Preparation Products

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5-Methyl-4-isoxazolecarboxylic acid Suppliers

Americas 1 Belgium 3 Canada 4 China 306 Europe 3 France 2 Germany 7 India 35 Japan 1 Slovakia 1 South Korea 1 Switzerland 2 Ukraine 2 United Kingdom 16 United States 53 Global 437

J & K SCIENTIFIC LTD.

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INTATRADE GmbH

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Energy Chemical

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Beijing Ouhe Technology Co., Ltd

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JinYan Chemicals(ShangHai) Co.,Ltd.

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View Lastest Price from 5-Methyl-4-isoxazolecarboxylic acid manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: 5-Methyl-4-isoxazolecarboxylic acid 42831-50-5
Price: US $0.00-0.00/Kg/Drum
Min. Order: 1KG
Purity: 99%min
Supply Ability: 1000KGS
Release date: 2021-11-08

R&D Scientific Inc.

Product: 5-methylisoxazole-4-carboxylic acid 42831-50-5
Price: US $450.00/g
Min. Order: 1g
Purity: 97
Supply Ability: 500 Kg
Release date: 2024-02-19

Hangzhou ICH Biofarm Co., Ltd

Product: 5-Methyl-4-isoxazolecarboxylic acid 42831-50-5
Price: US $0.00-0.00/kg
Min. Order: 0.1kg
Purity: 99.0%min
Supply Ability: 2000kg
Release date: 2023-06-09

42831-50-5, 5-Methyl-4-isoxazolecarboxylic acidRelated Search:

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

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TIMTEC-BB SBB005909

5-METHYLISOXAZOLE-4-CARBOXYLIC ACID

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5-METHYLISOXAZOLE-4-CARBOXYLIC ACID 98%

5-Methylisoxazole-4-carboxylic acid, 98+%

Imp. D (EP):5-Methylisoxazole-4-carboxylic Acid

5-Methylisoxazole-4-carboxylicAcid&gt

5-Methyl-4-isoxazolecarboxylic acid ISO 9001：2015 REACH

5-Methyl-4-isoxazolecarboxyl

5-methylisoxazole-4-formic acid

Leflunomide EP Impurity D (5-Methylisoxazole-4-carboxylic Acid)

Lefluonamide Impurity D

Leflunomide impurities1343

5-Methyl-4-isoxaze-4-carboxylic AcidQ: What is 5-Methyl-4-isoxaze-4-carboxylic Acid Q: What is the CAS Number of 5-Methyl-4-isoxaze-4-carboxylic Acid Q: What is the storage condition of 5-Methyl-4-isoxaze-4-carboxylic Acid Q: What are the applications of 5-Methyl-4-isoxaze-4-carboxylic Acid

CAS No.42831-50-5 5-Methyl-4-isoxazolecarboxylic acid

MethylisoChemicalbookxazole-4-carboxylic

42831-50-5

42931-50-5

C5H5NO3

C5H4NO3

CARBOXYLIC ACID

Heterocyclic Building Blocks

Isoxazoles

Building Blocks

Intermediates

Intermediates & Fine Chemicals

Pharmaceuticals

Isoxazoles, Oxadiazoles, Oxazoles

Acids and Derivatives

Heterocycles

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