磺胺醋酰,Sulfacetamide;Pharmaceutical Secondary Standard; Certified Reference Material
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氢溴酸,Hydrobromic acid;ACS reagent, 48%
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蟾蜍血红蛋白,Hemoglobin from Toad blood [Hb];powder, 98.0%-100.0%
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四乙基氯化铵,Tetraethylammonium chloride [TEAC];for electrochemical analysis, ≥99.0%
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β-半乳糖苷酶来源于大肠杆菌,β-Galactosidase from Escherichia coli [Lactase];Grade VI, lyophilized powder, ≥250 units/mg protein
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L-酪氨酸,L-Tyrosine;BioUltra, ≥99.0% (NT)