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发明人周伟,何建平,郭海燕. "A Process for Preparing High-Purity 1-Benzyl-3-(2-(6-oxo-3-phenylpyridazin-1(6H)-yl)ethyl)urea" [P]. 中国发明专利, 专利号 CN 110136066 B, 授权公告日 2023-05-09.
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