供货周期: | 现货 |
品牌: | AMRESCO |
货号: | FK3108 |
CAS号: | FK3108 |
FK3108 | 5,5'二硫代双(2-硝基苯甲酸) | 98% | 1g |
98% | 5g | ||
98% | 25g | ||
98% | 100g |
Cas号 | 69-78-3 | MDL: | --MFCD00007140 |
Beilstein | 1896821 | EINECS: | --200-714-4 |
分子式 | C14H8N2O8S2; [-SC6H3(NO2)CO2H]2 | ||
分子量 | 396.35 | ||
别名 | 5,5'二硫代双(2-硝基苯甲酸) ;双(3-羧基-4-硝基苯基)二硫,6,6ˊ-二硝基-3,3ˊ-二硫代苯甲酸 ;Ellman’s Reagent (DTNB) | ||
分子结构式 |
备注: | |||
性状 | Ellman's Reagent (DTNB) reacts with sulfhydryl groups to yield a colored product, providing a reliable method to measure reduced cysteines and other free sulfhydryls in solution. Ellman's Reagent (5,5'-dithio-bis-[2-nitrobenzoic acid]) is used to estimate sulfhydryl groups in a sample by comparing to a standard curve of a sulfhydryl-containing compound such as cysteine. Alternatively, sulfhydryl groups can be assayed using the extinction coefficient of TNB (14,150M-1cm-1 at 412nm). Ellman's Reagent has been used for applications other than sulfhydryl estimation, such as for determining alkylthiols by HPLC using a pre-column derivatization procedure and to study thiols in the active site of several enzymes. Highlights: ?Sulfhydryl assay – reacts quantitatively with free (reduced) sulfhydryl groups (–SH) to yield detectable TNB product ?Colorimetric detection – colored product enables spectrophotometric measurement in cuvettes or microplates (λmax = 412nm; ε = 14,150/M?cm) ?Proven method – well-characterized chemistry provides quantitation of peptide or protein sulfhydryl groups using extinction coefficient calculation or by comparison to a cysteine standard | ||
Ellman's Reagent (DTNB) reacts with sulfhydryl groups to yield a colored product, providing a reliable method to measure reduced cysteines and other free sulfhydryls in solution. Ellman's Reagent (5,5'-dithio-bis-[2-nitrobenzoic acid]) is used to estimate sulfhydryl groups in a sample by comparing to a standard curve of a sulfhydryl-containing compound such as cysteine. Alternatively, sulfhydryl groups can be assayed using the extinction coefficient of TNB (14,150M-1cm-1 at 412nm). Ellman's Reagent has been used for applications other than sulfhydryl estimation, such as for determining alkylthiols by HPLC using a pre-column derivatization procedure and to study thiols in the active site of several enzymes. Highlights: ?Sulfhydryl assay – reacts quantitatively with free (reduced) sulfhydryl groups (–SH) to yield detectable TNB product ?Colorimetric detection – colored product enables spectrophotometric measurement in cuvettes or microplates (λmax = 412nm; ε = 14,150/M?cm) ?Proven method – well-characterized chemistry provides quantitation of peptide or protein sulfhydryl groups using extinction coefficient calculation or by comparison to a cysteine standard | |||
备注: | 以上描述,仅作参考,并不表示您收到的产品,与此项描述完全相符,产品的出厂标准,请参见质量标准。 | ||
贮存 | 阴凉干燥处保存 | ||
用途 | 巯基测定,是测定蛋白质、多肽和组织中巯基的灵敏试剂。也用于有机磷农药中毒的监测(胆碱酯酶测定)。 |
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