165659-93-8 1H-Benzimidazole-5-sulfonic acid, 2-phenyl- 2-PHENYLBENZIMIDAZOLE-5-SULFONIC ACID 2-Phenyl-1H-benzimidazole-5-sulphonic acid 27503-81-7 EINECS 248-502-0 Ensulizole Ensulizole [INN] Phenylbenzimidazole sulfonic acid Phenylbenzimidazole sulfonic acid [USAN]