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发明人唐晓军,郭海燕,韩伟. "A Process for Preparing High-Purity Ethyl 6-hydroxy-3-methyl-1H-indole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 113404796 B, 授权公告日 2018-12-28.
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