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2,3-Dichloro-5,6-dicyano-1,4-benzoquinone, 2,3-二氯-5,6-二氰基-1,4-苯醌/25g/CAS:84-58-2
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Pyridine hydrobromide, 吡碇溴化氢盐/500g/CAS:18820-82-1
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BG-F386040M(上磨口减压层析柱/外径60mm/长度400mm/G3)
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BG-C144500(格式蛇形冷凝器/冷凝管/冷凝部分长500mm,磨口24/40)
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