4-Hydroxyfenbendazole 5-(p-Hydroxyphenyl)thio-2-carbomethoxyaminobenzimidazole 72447-64-4 Carbamic acid, (5-((4-hydroxyphenyl)thio)-1H-benzimidazol-2-yl)-, methyl ester Carbamic acid, (5-((4-hydroxyphenyl)thio)-1H-benzimidazol-2-yl)-,methyl ester Fbz-OH Fenbendazole hydroxide