135048-70-3 2,6-Bcdpp 2,6-Bis(bis-(2-chloroethyl)amino)-4,8-dipiperidino-pyrimido(5,4-d)pyrimidine Dip-Cl N,N,N',N'-Tetrakis(2-chloroethyl)-4,8-di-1-piperidinylpyrimido(5,4-d)pyrimidine-2,6-diamine Pyrimido(5,4-d)pyrimidine-2,6-diamine, N,N,N',N'-tetrakis(2-chloroethyl)-4,8-di-1-piperidinyl-