7-ketopyrazolo (4,3-d) pyrimidine

7-ketopyrazolo (4,3-d) pyrimidine, with CAS No. 13877-55-9, is a fragment molecule that serves as an important scaffold for molecular linking, expansion, and modification. 7-ketopyrazolo (4,3-d) pyrimidine provides a structural basis and research tool for the design and screening of novel drug candidates, and is commonly used in drug discovery, drug synthesis, and related research.