| Member | Definition | Role |
|---|
| 2-amino[1,3]thiazolo[4,5-d]pyrimidine-5,7-diol | | 2-amino[1,3]thiazolo[4,5-d]pyrimidine-5,7-diol |
| 7-[(2,6-dimethyl-4-morpholinyl)methyl]-5-thiazolo[3,2-a]pyrimidinone | | 7-[(2,6-dimethyl-4-morpholinyl)methyl]-5-thiazolo[3,2-a]pyrimidinone |
| ritanserin | A thiazolopyrimidine that is 5H-[1,3]thiazolo[3,2-a]pyrimidin-5-one which is substituted at position 7 by a methyl group and at position 6 by a 2-{4-[bis(4-fluorophenyl)methylidene]piperidin-1-yl}ethyl group. A potent and long-acting seratonin (5-hydroxytryptamine, 5-HT) antagonist of the subtype 5-HT2 (Ki = 0.39 nM), it is used in the treatment of a variety of disorders including anxiety, depression and schizophrenia. It has little sedative action. | ritanserin |