Labeling of cysteine residues, as well as other thiolated molecules
Cy3 maleimide is a selective and efficient fluorophore dye with low aqueous solubility. This labeling reagent can be used to attach Cy3 fluorophore to proteins and peptides which contain cysteine residues, as well as to other thiolate molecules (such as thiol-containing oligonucleotides). Before the labeling reactions, Cystines should be reduced with TCEP (tris-carboxyethylphosphine). For biomolecule labeling, the labeling reagent has low aqueous solubility, using of organic co-solvent to dissolve this molecular is necessary for efficient reaction. First, Cyanine dye should be dissolved in organic solvent and then added to a solution of biomolecule in appropriate aqueous buffer.
Cas No.
SDF
化学名
1-(6-((2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl)amino)-6-oxohexyl)-3,3-dimethyl-2-((1E,3E)-3-(1,3,3-trimethylindolin-2-ylidene)prop-1-en-1-yl)-3H-indol-1-ium
Canonical SMILES
CC1(C)C2=CC=CC=C2[N+](CCCCCC(NCCN3C(C=CC3=O)=O)=O)=C1/C=C/C=C4C(C)(C)C5=CC=CC=C5N\4C
分子式
C36H43ClN4O3
分子量
615.20
溶解度
soluble in organic solvents (DMF, DMSO, dichloromethane), insoluble in water
储存条件
24 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate
General tips
For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.
Shipping Condition
Evaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request