SEARCH Articles Figures Tables 1 -Acetyl-7-nitro-2,3-dihydro 2,5-Dioxo-7-nitro-3,4-dihydro 2- Methoxycarbonyl-4-nitro-2,3-dihydro 3- Formyl-4-nitro-2,3-dihydro 4- Methyl-3-nitro-4,5-dihydro 5-Nitro-2,3 dihydro 1,4 phthalazinedione 6- Nitro-3,4-dihydro-2-quinoxalinamine 9-Nitro-5,6-dihydro- -3-oxid Furans 2.5- dihydro-2-nitro-5-acetoxy