荧光染料para-iodoHoechst 33258

荧光染料Dye Reagents para-iodoHoechst 33258; 纯度: 99.73%

para-iodoHoechst 33258是Hoechst染料中的一种,Hoechst 33258能用于DNA定量的细胞染料。

para-iodoHoechst 33258amp;;

para-iodoHoechst 33258 Chemical Structure

CAS No. : 158013-43-5

规格 价格 是否有货 数量
10;mM;*;1 mL in DMSO ¥4115 In-stock
5 mg ¥3500 In-stock
10 mg ¥5000 In-stock
50 mg ¥15000 In-stock
100 mg ¥21000 In-stock
200 mg ; 询价 ;
500 mg ; 询价 ;

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para-iodoHoechst 33258 相关产品

bull;相关化合物库:

  • Bioactive Compound Library Plus

生物活性

para-iodoHoechst 33258 is part of a family of blue fluorescent dyes used to stain DNA. Hoechst 33258 is a cell dye for DNA quantitation. IC50 Value: These Bis-benzimides were originally developed by Hoechst AG, which numbered all their compounds so that the dye Hoechst 33342 is the 33342nd compound made by the company. There are three related Hoechst stains: Hoechst 33258, Hoechst 33342, and Hoechst 34580. The dyes Hoechst 33258 and Hoechst 33342 are the ones most commonly used and they have similarexcitation/emission spectra. Both dyes are excited by ultraviolet light at around 350 nm, and both emit blue/cyan fluorescent light around anemission maximum at 461 nm. Unbound dye has its maximum fluorescence emission in the 510-540 nm range. Hoechst dyes are soluble in water and in organic solvents such as dimethyl formamide or dimethyl sulfoxide. Concentrations can be achieved of up to 10 mg/mL. Aqueous solutions are stable at 2-6 °C for at least six months when protected from light. For long-term storage the solutions are instead frozen at ≤-20 °C. The dyes bind to the minor groove of double-stranded DNA with a preference for sequences rich in adenine andthymine. Although the dyes can bind to all nucleic acids, AT-rich double-stranded DNA strands enhance fluorescence considerably. Hoechst dyes are cell-permeable and can bind to DNA in live or fixed cells. Therefore, these stains are often called supravital, which means that cells survive a treatment with these compounds. Cells that express specific ATP-binding cassette transporter proteins can also actively transport these stains out of their cytoplasm.

分子量

534.39

Formula

C25H23IN6

CAS 号

158013-43-5

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

4deg;C, protect from light

*In solvent : -80deg;C, 6 months; -20deg;C, 1 month (protect from light)

溶解性数据
In Vitro:;

DMSO : 20.5 mg/mL (38.36 mM; Need ultrasonic and warming)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 1.8713 mL 9.3565 mL 18.7129 mL
5 mM 0.3743 mL 1.8713 mL 3.7426 mL
10 mM 0.1871 mL 0.9356 mL 1.8713 mL

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效
储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month (protect from light)。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。

参考文献
  • [1]. Portugal J, Waring MJ. Assignment of DNA binding sites for 4′,6-diamidine-2-phenylindole and bisbenzimide (Hoechst 33258). A comparative footprinting study. Biochimica et Biophysica Acta 949 (2): 158-68.

    [2]. a b c “Hoechst Stains”. Invitrogren (Molecular Probes).

    [3]. Portugal J, Waring MJ. Assignment of DNA binding sites for 4′,6-diamidine-2-phenylindole and bisbenzimide (Hoechst 33258). A comparative footprinting study. Biochimica et Biophysica Acta 949 (2): 158-68.