13093-87-3 Benzylpenillic acid Imidazo[5,1-b]thiazole-3,7-dicarboxylic acid, 2,3,7,7a-tetrahydro-2,2-dimethyl-5-(phenylmethyl)- Imidazo[5,1-b]thiazole-3,7-dicarboxylic acid, 5-benzyl-2,3,7,7a-tetrahydro-2,2-dimethyl- NSC76064