发明人冯建国,马晓峰,张德明. "Method for the Synthesis of 6-Methyl-4-(methylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109237966 B, 授权公告日 2018-08-08.
Kowalski A, Martínez F, Nowak P. "A Process for Preparing High-Purity 6-Methyl-4-(methylsulfonyl)-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylic acid" [P]. European Patent, EP 3719714 A1, 2025-08-08.
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