羟乙基哌嗪乙硫磺酸,HEPES, Free Acid, Molecular Biology Grade;A zwitterionice N-substituted aminosulfonic acid buffer. Useful in the pH 6.8-8.2 range. Has a pKa of 7.48 at 25°C.
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二十碳五烯酸甲酯,Methyl all-cis-5,8,11,14,17-eicosapentaenoate;analytical standard, ≥98.5% (GC)
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荷叶碱,Nuciferin
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过氧化氢酶来源于人类红细胞,Catalase from human erythrocytes;≥90% (SDS-PAGE), buffered aqueous solution, ≥30,000 units/mg protein
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氯化镱(III)六水合物,Ytterbium(III) chloride hexahydrate;99.9% trace metals basis
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人参炔醇,Panaxynol
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菲啶,Phenanthridine;≥99%, purified by sublimation