5-methyl-1,3-thiazolidine-2-thione

2-ethyl-5-methyl-4,5-dihydro-1,3-thiazole

2-吗啉-4-丙胺

5-甲基-2-苯基-4,5-二氢-1,3-噻唑

2,5-dimethyl-4,5-dihydro-1,3-oxazole