发明人沈红梅,张德明,王建平. "Method for the Synthesis of 5-Chloro-3-((5-methoxy-4-oxo-4H-pyran-2-yl)methyl)benzo[d]oxazol-2(3H)-one" [P]. 中国发明专利, 专利号 CN 117840825 B, 授权公告日 2015-08-14.
发明人高志强,唐晓军,马晓峰. "A Process for Preparing High-Purity 5-Chloro-3-((5-methoxy-4-oxo-4H-pyran-2-yl)methyl)benzo[d]oxazol-2(3H)-one" [P]. 中国发明专利, 专利号 CN 115693955 A, 授权公告日 2024-10-11.
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