91830-42-1

Basic information

• Product Name: 6-bromo-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid
• Synonyms: 6-bromo-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid
• CAS NO: 91830-42-1
• Molecular Weight: 359.176
• Mol File: 91830-42-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 6-bromo-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 6-bromo-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid(91830-42-1)
• EPA Substance Registry System: 6-bromo-3-methyl-4-oxo-2-phenyl-4H-1-benzopyran-8-carboxylic acid(91830-42-1)

Safety Data

• Hazardous Substances Data: 91830-42-1(Hazardous Substances Data)

Upstream product

• 91099-82-0 methyl 5-bromo-3-propionylsalicylate 
• 98-88-4 benzoyl chloride 

Downstream Products

• 91849-12-6 β-piperidinoethyl 6-bromo-3-methylflavone-8-carboxylate 

Relevant articles and documents

Preparation method of flavoxate hydrochloride coupled impurity

The invention provides a preparation method of a flavoxate hydrochloride coupled impurity. The preparation method comprises the following steps: with a compound 2 (R is methyl, ethyl or hydrogen atom) as an initial material, performing a coupling reaction on two molecules first and then constructing a benzene ring branch chain structure, or constructing a branch chain structure and then performing coupling. By obtaining the coupled impurity, the impurity spectrum of flavoxate hydrochloride is clearer, and an analytical method is more accurate by inspecting the degree of separation of impurities, so that the quality of flavoxate hydrochloride active ingredient is further improved, and the curative effect and the safety are guaranteed.