氰基甲酸甲酯

methyl 4-(tert-butyl)-1-(2,4,5-tri-tert-butyl-1H-1,3-diphosphol-1-yl)-1H-1,2,3-azadiphosphole-5-carboxylate

dimethyl 4-methylpyridazine-3,6-dicarboxylate

dimethyl 5-(dimethylamino)-1,2,4-triazine-3,6-dicarboxylate

dimethyl 5-pyridin-2-yl-1,2,4-triazine-3,6-dicarboxylate