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A standard reagent for the determination of reactive sulfhydryl groups by absorbance measurements. It is used primarily for the determination of sulfhydryl and disulfide groups in proteins. The color produced is due to the formation of a thio anion, 3-carboxyl-4-nitrothiophenolate.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D004228 · MeSH 2026。
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