16562-98-4 3-Thiophenecarboxylic acid, 4-((2,6-dichlorophenyl)amino)- 3-Thiophenecarboxylic acid, 4-(2,6-dichloroanilino)- 4-(2,6-Dichloranilino)-3-thiophencarbonsaeure 4-(2,6-Dichloroanilino)-3-thiophenecarboxylic acid Clantifen Clantifen [INN]