Product name: Sulforhodamine 101 sulfonyl chloride
Description: Sulforhodamine 101 acid chloride is quite unstable in water, especially at the higher pH required for reaction with aliphatic amines. Protein modification by this reagent is frequently done at low temperature. This reagent reacts with amine compounds such as amino acids, peptides and proteins to give bright red fluorescent conjugates that are extremely stable, and resistant to protease-catalyzed hydrolysis.
Storage: -20°C desiccated and protected from light
References: Larramendy ML, et al. (1998). Comparison of fluorescein isothiocyanate- and Texas red-conjugated nucleotides for direct labeling in comparative genomic hybridization. Cytometry 31, 174-9; Schneider H (1989). Differential intracellular staining of identified neurons in Locusta with Texas Red and Lucifer Yellow. J Neurosci Methods 30, 107-15.
Molecular Weight: 625.16
Molecular Formula: C31H29ClN2O6S2
Spectral Properties: Abs/Em = 588/601 nm
Solvent System: DMF or (do not use DMSO)