DTNB

产品描述：DTNB为Ellman试剂。它用于比色法测定生物样品中巯基。它易溶于水。在巯基化合物的存在下，无色的DTNB将被转变成黄色的5-巯基-2-硝基苯甲酸。由于5-巯基-2-硝基苯甲酸在412 nm处具有ZD吸收，DTNB的吸收光谱并不干扰巯基的测定。
外观：浅黄色晶体粉末
相关参数：
Product Name:DTNB
Product Number:D8130
Product Brand:Sigma
CAS Number:69-78-3
Molecular Formula:[-SC6H3(NO2)CO2H]2
Molecular Weight:396.35

TEST/SPECIFICATION
APPEARANCE:YELLOW POWDER
SOLUBILITY:CLEAR YELLOW TO YELLOW-GREEN SOLUTION AT 40MG PLUS 5ML OF ETHANOL
IR SPECTRUM:CONSISTENT WITH STRUCTURE
PURITY BY THIN LAYER CHROMATOGRAPHY:NLT 98%
SUITABILITY:SUITABLE FOR USE AS A REAGENT IN SULFHYDRYL GROUP DETERMINATION
RECOMMENDED RETEST:5 YEARS