meta-iodoHoechst 33258是一种蓝色荧光染料，用于染DNA。

Hoechst stains are part of a family of blue fluorescent dyes used to stain DNA. IC50 Value: Target: 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

Solid

Room temperature in continental US; may vary elsewhere.

4°C, protect from light In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Em 450-495 nm Blue

Ex 450-495 nm Blue

[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]. Latt SA, Stetten G, Juergens LA, Recent developments in the detection of deoxyribonucleic acid synthesis by 33258 Hoechst fluorescence. The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society 23 (7): 493-505.

In Vitro: DMSO : < 1 mg/mL (ultrasonic;warming;heat to 66°C) (insoluble or slightly soluble)Ethanol : < 1 mg/mL (ultrasonic;warming) (insoluble)