2-Furancarboxylic acid, 5-nitro-, 2-(5,6-dihydro-2H-1,4-oxazin-3-yl)hydrazide 5-Nitro-2-furancarboxylic acid 2-(5,6-dihydro-2H-1,4-oxazin-3-yl)hydrazide 78205-31-9 BRN 4518969