| —— | 4a,8a-Methanophthalazine-1,4-dicarboxylic acid, 1,2-dihydro-1-[2-(methoxycarbonyl)hydrazino]-, dimethyl ester, (1alpha,4aalpha,8aalpha)- | —— | C15H18N4O6 | 350.33 | 
                                                                                                                                            
                                        | —— | 4a,8a-Methanophthalazine-1,4-dicarboxylic acid, 1-[2-[(1,1-dimethylethoxy)carbonyl]hydrazino]-1,2-dihydro-, dimethyl ester, (1alpha,4aalpha,8aalpha)- | —— | C18H24N4O6 | 392.4 | 
                                                                                                                                            
                                        | —— | 4a,8a-Methanophthalazine-1,4-dicarboxylic acid, 1,2-dihydro-1-methoxy-, dimethyl ester, (1alpha,4aalpha,8aalpha)- | —— | C14H16N2O5 | 292.29 | 
                                                                                                                                            
                                        | —— | 4a,8a-Methanophthalazine-1,4-dicarboxylic acid, 1-ethoxy-1,2-dihydro-, dimethyl ester, (1alpha,4aalpha,8aalpha)- | —— | C15H18N2O5 | 306.31 | 
                                                                                                                                            
                                        | —— | 4a,8a-Methanophthalazine-1,4-dicarboxylic acid, 1,2-dihydro-1-(1-methylethoxy)-, dimethyl ester, (1alpha,4aalpha,8aalpha)- | —— | C16H20N2O5 | 320.34 |