L-(+)-酒石酸,L-(+)-Tartaric acid;Pharmaceutical Secondary Standard; Certified Reference Material
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聚乙二醇 [PEG-300],Poly(ethylene glycol);PEG300, average Mn 300
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二氢叶酸,Dihydrofolic acid [FAH2];≥90%
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二羰基乙酰丙酮铑 (I),(Acetylacetonato)dicarbonylrhodium(I) [Rh(CO)2acac];98%
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氧化钆(III),Gadolinium(III) oxide;nanopowder, <100 nm particle size (BET), 99.8% trace metals basis
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氧氟沙星,Ofloxacin;Pharmaceutical Secondary Standard; Certified Reference Material
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三氟乙酸,Trifluoroacetic acid [TFA];for synthesis, ≥99% (acidimetric)