久久国产精品午夜一区_91精品國產高清久久久久久91_?级毛片免费全部播放_欧美色图在线视频一区二区三区_国产综合亚洲一区二区三区_中文字幕熟女网_国产精品男人爽免费视频_九九无码网战_亚洲日本三级电影在线观看_欧美日韩DVD手机在线不卡

  
英文名稱：Monobromobimane(mBBr )

          Bromobimane

          3-(Bromomethyl)-2,5,6-trimethylpyrazolo[1,2-a]pyrazole-1,7-dione
中文名稱：溴代雙滿，溴二胺

           3-(溴甲基)-2,5,6-*基吡唑并[1,2-a]吡唑-1,7-二酮

CAS NO：71418-44-5

分子式：C10H11BrN2O2

分子量：271.11

純  度：≥95.0%

性 狀：黃色粉末

溶解性：Soluble in water (partly), DMSO, DMF, methanol (25 mg/ml), and chloroform.

結構式：

廠  家：陜西新研博美生物科技有限公司

請點擊此處進入陜西新研博美生物科技有限公司展臺查看

請點擊此處進入陜西新研博美生物科技有限公司展臺查看

應用簡介：

單溴二胺是一種巰基反應的熒光探針，具有細胞膜滲透性，生理pH下與接觸到的巰基基團快速反應，產生一個穩定的熒光信號。mBBr可用來評估或定量一系列含活性硫或巰基基團的化合物，包括硫化氫（H2S），谷胱甘肽，蛋白和核苷酸。特別適合用于谷胱甘肽的定量。mBBr的*吸收和發射波長分別為395nm和490nm。

Bromobimanes in solution (aqueous or organic solvents of medium polarity) react with small thiols [e.g., the tripeptide thiol glutathione (GSH)], and with reactive protein thiol groups (e.g., hemoglobin). The reactions of bromobimanes with thiols are second order and dependent on pH, the active nucleophile being the thiolate anion. The reaction of bromobimane with a thiolate converts the nonfluorescent agent into water-soluble fluorescent products. The neutral agents mBBr and bBBr are moderately soluble in mediumpolarity organic solvents (acetonitrile, dichloromethane), and slightly soluble in water. The quaternary salt, qBBr, and the anionic bromobimane, SBBr, are soluble in water, but less soluble in organic solvents. Bromobimanes are yellow[1]. The highly selective, rapid reactivity of bromobimanes toward thiols, the stability and fluorescence yield of the thiol derivatives, the ease of separation of the derivatives by reversed-phase HPLC, and the availability of both cell-penetrating and nonpenetrating forms, make the use bromobimanes an extremely powerful approach to the analysis of low molecular weight biothiols.