发明人何建平,钱学锋,杨光. "Method for the Synthesis of Ethyl 8-bromo-6-chloroimidazo[1,2-b]pyridazine-2-carboxylate" [P]. 中国发明专利, 专利号 CN 116414476 A, 授权公告日 2017-11-16.
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