D-biotin-d-sulfoxide

1H-Thieno(3,4-D)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 5-oxide, (3as,4S,5S,6ar)-

1H-Thieno(3,4-D)imidazole-4-pentanoic acid, hexahydro-2-oxo-, 5-oxide, (3as-(3aalpha,4beta,5alpha,6aalpha))-