3-methyl-5-(methylsulfanyl)-2,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one is a chemical compound registered under CAS number 28745-13-3, with the molecular formula C7H8N4OS and a molecular weight of about 196.23 g/mol. It is also known as 7-Hydroxy-3-methyl-5-methylthiopyrazolo[4,3-d]pyrimidine; NSC 138286. DeWeiChem supplies 3-methyl-5-(methylsulfanyl)-2,4-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one for laboratory research and bulk production; product code 468816. Send an inquiry for purity, packaging, price and lead time.