新斯的明EP杂质A 甲基硫酸盐(英文名 Neostigmine EP Impurity A methyl sulfate,CAS 4312-54-3)属于药物杂质对照品。分子式 C9H14NO CH3O4S。纯度 >95%。佳途科技作为 ISO 17034 认可的标准物质生产商,为该产品提供完整的质量文件与技术支持。
发明人徐明华,张德明,韩伟. "Method for the Synthesis of Neostigmine EP Impurity A methyl sulfate" [P]. 中国发明专利, 专利号 CN 110617287 A, 授权公告日 2019-09-09.
O'Brien P Q, Davis P L, Klinger H. "A Process for Preparing High-Purity Neostigmine EP Impurity A methyl sulfate" [P]. US Patent, US 9301364 B2, 2017-11-02.
参考文献 Literature
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