1H-Pyrazole-3-carboxylic acid, 4-amino-5-(4-methoxyphenyl)-, ethyl ester 3-Pyrazolecarboxylic acid, 4-amino-5-(p-methoxyphenyl)-, ethyl ester 4-Amino-5-(p-methoxyphenyl)-3-pyrazolecarboxylic acid ethyl ester 91857-55-5