87866-18-0
7-amino-2,3-dihydrotriazolo[4,5-d]pyrimidine-5-thione
→
31571-52-5
3H-s-Triazolo[4,5-d]pyrimidin-7(4H,6H)-one, 5-thiono-
1004-76-8
4,5-二氨基-2-硫脲嘧啶