2-thiophenecarboxylic acid, 3-amino-4,5-dihydro-, methylester

Chinese name: 3-amino-2-thiophenecarboxylate

English name: Methyl 3-amino-2-thiophenecarboxylate

CAS number: 22288-78-4

Molecular formula: C₆H₇NO₂S

Molecular weight: 157.19

Physical and chemical properties

Appearance: white or off-white solid, some data describe it as light yellow crystalline powder.

Melting point: 62-64℃.

Boiling point: 334.64℃, some data describe it as 100-102℃/0.1mmHg.

Density: 1.32g/cm³.

Flash point: 138.13℃.

Solubility: insoluble in water, soluble in alcohol, toluene, xylene and other solvents.

Uses: It is an important organic synthesis intermediate, which can be used as a pesticide intermediate. It is the synthetic raw material of sulfonylurea herbicides such as thifensulfuron-methyl, thifensulfuron-methyl, and Kuoyesan. It can also participate in the synthesis of drugs such as tenoxicam.

Storage conditions: It is usually recommended to store at 2-8℃. It can be sealed and stored in a cool and dry place according to actual conditions.