Determination of Genotoxic Impurity Dimethyl Sulfate in Neostigmine Methylsulfate Bulk Drug by Derivatization HS-GC-FID
1 NMPA Key Laboratory for Core Technology of Generic Drug Evaluation, Key Laboratory of Drug Contacting Material Quality Control of Zhejiang Province, Zhejiang Institute for Food and Drug Control, Hangzhou 310052, China
2 Zhejiang Haisheng Pharmaceutical Co., Ltd., Quzhou 321004, China
3 Zhejiang University of Technology, Hangzhou 310014, China
4 Hangzhou Medical College, Hangzhou 310053, China
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