2,2'-((4,8-Bis(diethylamino)pyrimido(5,4-d)pyrimidine-2,6-diyl)bis((2-methoxyethyl)imino))bisethanol 54093-30-0 Ethanol, 2,2'-((4,8-bis(diethylamino)pyrimido(5,4-d)pyrimidine-2,6-diyl)bis((2-methoxyethyl)imino))bis- RA 642 RA 642BS RXRA 642