发明人郭海燕,张德明,朱建伟. "Method for the Synthesis of N-Methyl-2-oxo-2,3-dihydrobenzo[d]oxazole-5-sulfonamide" [P]. 中国发明专利, 专利号 CN 113472395 A, 授权公告日 2015-09-07.
发明人何建平,林芳,郭海燕. "A Process for Preparing High-Purity N-Methyl-2-oxo-2,3-dihydrobenzo[d]oxazole-5-sulfonamide" [P]. 中国发明专利, 专利号 CN 109041390 A, 授权公告日 2015-09-05.
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