3-Methylthio-4-amino-1,2,4-triazolin-5-thion

N-butyl-[1,2,5]thiadiazolo[3,4-d]pyrimidin-7-amine

4-amino-N'-butyl-1,2,5-thiadiazole-3-carboximidamide

7-pyrrolidin-1-yl-[1,2,5]thiadiazolo[3,4-d]pyrimidine

N-benzyl-[1,2,5]thiadiazolo[3,4-d]pyrimidin-7-amine