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meta-iodoHoechst 33258
本产品不向个人销售,仅用作科学研究,不用于任何人体实验及非科研性质的动物实验。
meta-iodoHoechst 33258图片
CAS NO:158013-42-4
包装与价格:
包装价格(元)
5 mg电议
10 mg电议
50 mg电议
100 mg电议
200 mg电议
500 mg电议

产品介绍

产品描述

Hoechst stains are part of a family of blue fluorescent dyes used to stain DNA.

体外活性

The dyes Hoechst 33258 and Hoechst 33342 are the ones most commonly used and they have similar excitation/emission spectra. Both dyes are excited by ultraviolet light at around 350 nm, and both emit blue/cyan fluorescent light around an emission 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 dimethylformamide 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 and thymine. 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.

Cas No.

158013-42-4

分子式

C25H23IN6

分子量

534.39

别名

meta-iodoHoechst 33258

储存和溶解度

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years