发明人张德明,王建平,杨光. "一种头孢匹罗杂质N1的合成方法" [P]. 中国发明专利, 专利号 CN 110892639 A, 授权公告日 2022-11-24.
Anderson J P, O'Brien P Q, Williams B T. "Method for the Synthesis of Cefpirome Impurity N1" [P]. US Patent, US 9604308 B2, 2019-03-08.
O'Brien P Q, Mueller T, Roberts E F. "A Process for Preparing High-Purity Cefpirome Impurity N1" [P]. US Patent, US 11452355 B2, 2023-11-20.
参考文献 Literature
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