| 920975-31-1 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2-(4-chlorophenyl)-2,4a-dihydro- | C12H7Cl3N4S |
| 920975-32-2 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2,4a-dihydro-2-(4-methylphenyl)- | C13H10Cl2N4S |
| 920975-33-3 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2,4a-dihydro-2-(4-nitrophenyl)- | C12H7Cl2N5O2S |
| 920975-34-4 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2,4a-dihydro-3-methyl-2-phenyl- | C13H10Cl2N4S |
| 920975-35-5 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2-(4-chlorophenyl)-2,4a-dihydro-3-methyl- | C13H9Cl3N4S |
| 920975-36-6 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2,4a-dihydro-3-methyl-2-(4-nitrophenyl)- | C13H9Cl2N5O2S |
| 920975-37-7 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-3-ethyl-2,4a-dihydro-2-phenyl- | C14H12Cl2N4S |
| 920975-38-8 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-2-(4-chlorophenyl)-3-ethyl-2,4a-dihydro- | C14H11Cl3N4S |
| 920975-39-9 | Pyrimido[4,5-d]pyrimidine-4(3H)-thione, 5,7-dichloro-3-ethyl-2,4a-dihydro-2-(4-nitrophenyl)- | C14H11Cl2N5O2S |
| 920975-41-3 | Pyrimido[4,5-d]pyrimidine, 5,7-dichloro-2-(4-chlorophenyl)-4-hydrazinyl-2,4a-dihydro- | C12H9Cl3N6 |
| 920975-42-4 | Pyrimido[4,5-d]pyrimidine, 5,7-dichloro-4-hydrazinyl-2,4a-dihydro-2-(4-methylphenyl)- | C13H12Cl2N6 |
| 920975-43-5 | Pyrimido[4,5-d]pyrimidine, 5,7-dichloro-4-hydrazinyl-2,4a-dihydro-2-(4-nitrophenyl)- | C12H9Cl2N7O2 |
| 920975-45-7 | Benzaldehyde, 2-[5,7-dichloro-2-(4-chlorophenyl)-2,4a-dihydropyrimido[4,5-d]pyrimidin -4-yl]hydrazone | C19H13Cl3N6 |
| 920975-46-8 | Benzaldehyde, 2-[5,7-dichloro-2,4a-dihydro-2-(4-methylphenyl)pyrimido[4,5-d]pyrimidin -4-yl]hydrazone | C20H16Cl2N6 |
| 920975-47-9 | Benzaldehyde, 2-[5,7-dichloro-2,4a-dihydro-2-(4-nitrophenyl)pyrimido[4,5-d]pyrimidin-4 -yl]hydrazone | C19H13Cl2N7O2 |