Triethylenemelamine51-18-3100 % similar Hexamethoxymethylmelamine3089-11-043 % similar 2,4-Dichloro-6-morpholino-1,3,5-triazine6601-22-540 % similar 4-(4,6-Dichloropyrimidin-2-yl)morpholine10397-13-437 % similar Dipyridamole58-32-234 % similar Altretamine645-05-633 % similar 4,4'-(6-Chloropyrimidine-2,4-diyl)dimorpholine10244-24-332 % similar Pyrimidinylpiperazine20980-22-731 % similar