33404-78-3 ACETIC ACID, (2-(3,6-DIAMINO-5-HYDROXYHEXANOYL)-1-METHYLHYDRAZINO)- BRN 4687658 L-threo-Hexonic acid, 3,6-diamino-2,3,4,6-tetradeoxy-, 2-(carboxymethyl)-2-methylhydrazide Negamycin