2,7-bis(methoxymethyl)-5,10-dimethoxy-3,8-dimethylpyrimido(4,5-g)quinazoline-4,9(3H,8H)-dione

3,6-dicyano-1,4-dimethoxy-2-nitrobenzene

2,5-Dimethoxy-1,4-benzoldicarbonitril

1,4-dimethoxy-2-nitrobenzene-3,6-dicarboxylic acid

1,4-Benzenedicarboxylic acid, 2,5-dimethoxy-3-nitro-, dimethyl ester