4-Phenyl-2-pyrrolidinone

4-Phenyl-2-pyrrolidinone (CAS 1198-97-6) is a pharmaceutical-grade Active Pharmaceutical Ingredient manufactured directly by Hunan Loop Pharmaceutical Co., Ltd., a Hangzhou-based specialist in key intermediates and fine chemicals for pharmaceutical APIs with R&D, quality-testing and production facilities including LC-MS, HPLC and GC analytical capability. It is sold under the company's in-house standards across a broad international market spanning North America, Central/South America, Western Europe, Eastern Europe, Australasia, Asia, the Middle East and Africa.