英文别名Biotin EP Impurity E; Biotin N1-Benzyl Impurity; 5-[(3aR)-1-benzyl-2-oxo-(3ar,6ac)-hexahydro-thieno[3,4-d]imidazol-4t-yl]-valeric acid; 5-[(3aS)-1-benzyl-2-oxo-(3ar,6ac)-hexahydro-thieno[3,4-d]imidazol-4t-yl]-valeric acid; 5-[(3aR,6S,6aS)-3-benzyl-2-oxo-3a,4,6,6a-tetrahydro-1H-thieno[3,4-d]imidazol-6-yl]pentanoic acid 
