Masuzawa, K Studies on central nervous system depressants. II. Synthesis of 2-piperazinone derivatives. [electronic resource] - Chemical & pharmaceutical bulletin Feb 1966 - 194-6 p. digital Publication Type: Journal Article ISSN: 0009-2363 Standard No.: 10.1248/cpb.14.194 doi Subjects--Topical Terms: Chemical PhenomenaChemistryPiperazinesUrea