Synonyms: 1H-Thieno[3,4-d]imidazole-4-pentanoicacid, 1-carboxyhexahydro-2-oxo-, [3aS-(3aa,4b,6aa)]-;1H-Thieno[3,4-d]imidazole-4-valeric acid, 1-carboxyhexahydro-2-oxo-, cis-(8CI); Thieno[3,4-d]imidazoline-4-valeric acid, 1-carboxytetrahydro-2-oxo-(7CI); 1'-N-Carboxy-d-biotin; Biotin, N1-carboxy-; N-Carboxybiotin