Sub Group: Heterocyclic Compounds Catalog Number: 10653 Formula: C23H32N6O4S CAS Number: 642928-07-2 Molecular Weight: 488.6 Synonyms: 5-[2-Ethoxy-5-[(4-ethyl-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one