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发明人沈红梅,钱学锋,马晓峰. "A Process for Preparing High-Purity Ethyl 1-butyl-5,6,7-trichloro-4-hydroxy-2-methyl-1H-indole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112691875 A, 授权公告日 2024-01-15.
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