4-Chloro-5,5-dimethyl-5H,6H,7H-pyrrolo[2,3-d]pyrimidin-6-one is a molecular building block. Its CAS is 1226804-02-9, and the formula is C8H8ClN3O. As a specialized chemical intermediate, its significance has grown substantially beyond academic research, establishing it as a critical enabler in pharmaceutical development pipelines. The compound's unique pyrrolopyrimidinone core structure...