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Catalog No.
Direct enzymatic labeling of DNA/cDNA e.g. by PCR and Nick Translation
Grouped product items
SizePriceStock Qty
25ul (1mM)
In stock
5x25ul (1mM)
In stock

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Cy3-dUTP can be used for direct enzymatic labeling of DNA/cDNA by PCR with Taq polymerase, Nick Translation with DNAse I/ DNA Polymerase I, cDNA labeling and 3’-end labeling. Cy3-dUTP can replace TTP in reactions in which it serves as a substrate for T4 and Taq DNA polymerases, E. coli DNA polymerase (holoenzyme and Klenow fragment), reverse transcriptase (from AMV and M-MuLV) and terminal transferase. The synthesized dye-labeled DNA/cDNA probes can be used for the identification of specific sequences by in-situ hybridization, microarray or blotting techniques. Cy3-dUTP can also be used for multicolor fluorescence labeling. Optimal substrate properties and thus labeling efficiency is ensured by an optimized linker attached to the C5 position of uridine. Recommended Cy3-dUTP/dTTP ratio for PCR and Nick Translation: 30-50% Cy3-dUTP/50% dTTP.

Chemical Properties

Physical AppearanceSolution
StorageStore at -20°C
M.Wt1135.97 (free acid)
FormulaC43H56N5O21P3S2(free acid)
SynonymsAminoallyl-dUTP - Cy3; 5-(3-Aminoallyl)-2'-deoxyuridine-5'-triphosphate, labeled with Cy3, Triethylammonium salt, Cy3 dUTP, Cyanine 3-dUTP
SolubilitySoluble in DMSO
Chemical Name1-ethyl-2-((1E,3E)-3-(1-(6-(((E)-3-(1-((2R,4S,5R)-4-hydroxy-5-(((hydroxy((hydroxy(phosphonooxy)phosphoryl)oxy)phosphoryl)oxy)methyl)tetrahydrofuran-2-yl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)allyl)amino)-6-oxohexyl)-3,3-dimethyl-5-sulfoindolin-2-yli
SDFDownload SDF
Canonical SMILESO=S(C1=CC=C([N+](CC)=C(C2(C)C)/C=C/C=C(C(C)(C)C3=C4C=CC(S(O)(=O)=O)=C3)/N4CCCCCC(NC/C=C/C5=CN([[email protected]]6C[[email protected]](O)[[email protected]@H](COP(OP(O)(OP(O)(O)=O)=O)(O)=O)O6)C(NC5=O)=O)=O)C2=C1)([O-])=O
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.

Quality Control

Quality Control & MSDS

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Chemical structure