... 1H-thieno[3,4-d]imidazole-4-pentanoic acid; Vitamin H (D-Biotin); D-Biotin pure; VH; 5-(2-oxohexahydro-1H- ... thieno[3,4-d]imidazol-4-yl)pentanoic ... 6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoate; 5-[(3aS,4S,6aS)-2-oxohexahydro-1H- ... thieno[3,4-d]imidazol-4-yl]pentanoate; 5-[(3aR,4S,6aS)-2-oxohexahydro-1H- ...