4-(4-amino-phenyl)-butyric acid methyl ester, 4-(4-Amino-phenyl)-buttersaeure-methylester, methyl 4-(4-aminophenyl)butyarte, Butyric acid,4-(p-aminophenyl)-,methyl ester, Methyl 4-(4-aminophenyl)butyrate, 4-{3-(methoxycarbonyl)propyl}aniline, Methyl-4-(4-aminophenyl)-butanoate, Benzenebutanoic acid,4-amino-,methyl ester, 4-(4-aminophenyl)butanoic acid methyl ester