1H-Thieno(3,4-d)imidazole-4-pentanamide, hexahydro-N-(6-((iodoacetyl)amino)hexyl)-2-oxo-, (3aS-(3aalpha,4beta,6aalpha))- 93285-75-7 Iaa-biotin N-Iodoacetyl-N'-biotinylhexylenediamine