发明人何建平,刘建华,钱学锋. "Method for the Synthesis of 5-(Carboxymethyl)benzo[d]oxazole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115040259 A, 授权公告日 2017-02-04.
发明人李文辉,孙丽萍,杨光. "A Process for Preparing High-Purity 5-(Carboxymethyl)benzo[d]oxazole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111882247 A, 授权公告日 2023-09-24.
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