发明人钱学锋,马晓峰,王建平. "Method for the Synthesis of 1-methyl-6-nitro-4-phenyl-1,4-dihydro-2h-3,1-benzoxazin-2-one
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AR-1C4668" [P]. 中国发明专利, 专利号 CN 112055481 A, 授权公告日 2020-05-18.
发明人张德明,黄志刚,孙丽萍. "A Process for Preparing High-Purity 1-methyl-6-nitro-4-phenyl-1,4-dihydro-2h-3,1-benzoxazin-2-one
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AR-1C4668" [P]. 中国发明专利, 专利号 CN 109278966 B, 授权公告日 2020-06-24.
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