(S)-6,7-Dihydro-1,2,3,10-tetramethoxy-7-(methyl(7-nitro-4-benzofurazanyl)amino)benzo(a)heptalen-9(5H)-one 108964-31-4 Benzo(a)heptalen-9(5H)-one, 6,7-dihydro-1,2,3,10-tetramethoxy-7-(methyl(7-nitro-4-benzofurazanyl)amino)-, (S)- N-(7-Nitrobenz-2-oxa-1,3-diazol-4-yl)colcemid Nbd-colcemid