1,6-Di-O-(2-isocyano-3-methylcrotonyl)-D-mannitol 1,6-Di-O-2-isocyano-3-methylcrotonyl-D-mannitol 61241-59-6 A 32390A A32390A Antibiotic A 32390A D-MANNITOL, 1,6-BIS(2-ISOCYANO-3-METHYL-2-BUTENOATE)