5-Amino-4-cyano-3-methyl-thiophene-2-carboxylic acid ethyl ester 의 분자 구조, CAS 번호: 23903-46-0
5-Amino-4-cyano-3-methyl-thiophene-2-carboxylic acid ethyl ester 의 분자 구조, CAS 번호: 23903-46-05-Amino-4-cyano-3-methyl-thiophene-2-carboxylic acid ethyl ester 의 분자 구조, CAS 번호: 23903-46-0