Synonyms: Awd 625;NSC292238;62134-35-4;n4,n8-dicyclohexyl-n2,n2,n6,n6-tetraethylpyrimido[5,4-d]pyrimidine-2,4,6,8-tetramine;AC1Q4YNE;AC1L3V1X;Awd-625;AR-1K5612;NSC 292238;NSC-292238;NCI60_002408;2,6-Bis(dimethylamino)-4,8-bis(cyclohexylamino)pyrimido(5,4-d)pyrimidine;Pyrimido(5,4-d)pyrimidinetetramine, N4,N8-dicyclohexyl-N2,N2,N6,N6-tetraethyl-;Pyrimido[5,4-d]pyrimidine-2,4,6,8-tetramine, N4,N8-dicyclohexyl-N2,N2,N6,N6-tetraethyl-;4-N,8-N-dicyclohexyl-2-N,2-N,6-N,6-N-tetraethylpyrimido[5,4-d]pyrimidine-2,4,6,8-tetramine;N(4),N(8)-Dicyclohexyl-N(2),N(2),N(6),N(6)-tetraethylpyrimido(5,4-d)pyrimidine-2,4,6,8-tetramine