山梨酸,Sorbic acid;≥99.0%
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三甲基氯硅烷,Chlorotrimethylsilane [TMCS, TMSCl];purified by redistillation, ≥99%
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环丙沙星,Ciprofloxacin;Pharmaceutical Secondary Standard; Certified Reference Material
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硝酸钾-15N,Potassium nitrate-15N;5 atom % 15N
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吐温20,TWEEN® 20;tested according to Ph. Eur.
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头孢甘氨酸 [三尖杉宁碱],Cephalomannine;Pharmaceutical Secondary Standard; Certified Reference Material
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吐温20,TWEEN® 20;for molecular biology, viscous liquid