发明人王建平,高志强,张德明. "Method for the Synthesis of Ethyl 3,4-dihydro-2H-benzo[b][1,4]oxazine-2-carboxylate hydrochloride" [P]. 中国发明专利, 专利号 CN 109384232 A, 授权公告日 2020-04-03.
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