发明人韩伟,罗永刚,李文辉. "Method for the Synthesis of 3-Hydroxy-7-methoxy-2-methyl-4H-benzo[b][1,4]oxazine-4-carbaldehyde" [P]. 中国发明专利, 专利号 CN 110699158 B, 授权公告日 2020-09-13.
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