998-97-0

Basic information

• Product Name: Butanimidic acid, ethyl ester
• CAS NO: 998-97-0
• Molecular Formula: C6H13NO
• Molecular Weight: 115.175
• Mol File: 998-97-0.mol

Chemical Properties

• CAS DataBase Reference: Butanimidic acid, ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanimidic acid, ethyl ester(998-97-0)
• EPA Substance Registry System: Butanimidic acid, ethyl ester(998-97-0)

Safety Data

• Hazardous Substances Data: 998-97-0(Hazardous Substances Data)

Upstream product

• 109-74-0 propyl cyanide 
• 64-17-5 ethanol 

Downstream Products

• 148019-34-5 5-(1-phenyl-ethylidene)-2-propyl-3,5-dihydro-imidazol-4-one 
• 109-74-0 propyl cyanide 
• 64-17-5 ethanol 
• 36190-02-0 2-propyl-oxazole-4-carboxylic acid ethyl ester 
• 36190-03-1 2-propyl-oxazole-4-carboxylic acid 
• 41269-68-5 C₁₃H₁₈N₂O₂ 
• 149675-45-6 5-isopropylidene-2-propyl-3,5-dihydro-imidazol-4-one 

Relevant articles and documents

Preparation method of telmisartan intermediate

The invention relates to a preparation method of a telmisartan intermediate, namely 2-n-propyl-4-methyl-6-Benzimidazolecarboxylic acid. The preparation method of the 2-n-propyl-4-methyl-6-Benzimidazolecarboxylic acid comprises the following steps: firstly, ethanol hydrochloride acts with butyronitrile and anhydrous hydrogen chloride within the range of 0-35 DEG C; the mixture obtained in the firststep reacts with 3-methyl-4-aminobenzoic acid and ice vinegar within the range of pH 5.0-11.0 at the controlled temperature of 10-40 DEG C, and an intermediate shown in the formula II is obtained; and then the intermediate shown in the formula II reacts with a sodium hypochlorite solution, and the 2-n-propyl-4-methyl-6-Benzimidazolecarboxylic acid is obtained. The intermediate preparation processis suitable for industrial production, and meanwhile the product quality is improved.