7-Dimethoxymethylcamptothecin

N,N-dimethyl-5-nitro-pyrimidine-4,6-diamine

(4R,5R)-4,5-二(二甲氨基羰基)-2,2-二甲基二氧

2-(dimethylamino)-6-nitrobenzonitrile

N2,N2-dimethyl-5-nitro-pyrimidine-2,4-diamine