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Pyridine sulfur trioxide,三氧化硫吡啶/1kg/CAS:26412-87-3'); document.write('¥1050
1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐(EDC)/500g/CAS:25952-53-8'); document.write('¥1500