发明人钱学锋,马晓峰,朱建伟. "Method for the Synthesis of 4-Methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-7-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 108460326 B, 授权公告日 2019-09-07.
发明人朱建伟,钱学锋,高志强. "A Process for Preparing High-Purity 4-Methyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-7-sulfonyl chloride" [P]. 中国发明专利, 专利号 CN 114036769 A, 授权公告日 2017-08-04.
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