Hoechst 33342 is a cell-permeable fluorescent DNA stain. It binds minor groove of AT-rich regions and is used to quantify DNA in viable cells.Solubility:Soluble to 1eq. HCL to 100mM and DMSO to 100mMMethod for Determining Identity: Proton NMR and MSOptical Rotation: As ReportedElemental Analysis: As ReportedStorage and Stability:Store at RT for 6 months after receipt. Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards:All products should be handled by qualified personnel only, trained in laboratory procedures.