4-chloro-6-methoxy-N-methylpyrimidin-2-amine

9-(dimethoxymethyl)anthracene

3,3-二甲氧基环丁烷-1-羧酸甲酯

methyl-3-cyanobicyclobutanecarboxylate

ethyl-3-carboiminomethoxybicyclobutanecarboxylate