Cyanine 5, SE

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Cat.No. 5436 - Cyanine 5, SE | C37H43N3O10S2 | CAS No. 146368-14-1
Description: Red fluorescent dye for the labeling of amines
Alternative Names: Cy5 NHS Ester
Chemical Name: 2-[5-[1-[6-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-6-oxohexyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1,3-pentadien-1-yl]-1-ethyl-3,3-dimethyl-5-sulfo-3H-indolium, inner salt
Purity: ≥95% (HPLC)

Biological Activity

Red fluorescent dye for the labeling of amines. Excitation maximum ~649 nm; emission maximum ~666 nm.

Technical Data

M. Wt 753.88
Formula C37H43N3O10S2
Storage Store at -20°C
Purity ≥95% (HPLC)
CAS Number 146368-14-1
PubChem ID 118705155
Smiles CC1(C)C2=C(C=CC(S(=O)(O)=O)=C2)N(CCCCCC(ON3C(CCC3=O)=O)=O)/C1=C/C=C/C=C/C4=[N+](CC)C5=C(C=C(S(=O)([O-])=O)C=C5)C4(C)C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMF 75.39 100
DMSO 75.39 100

Preparing Stock Solutions

The following data is based on the product molecular weight 753.88. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.33 mL 6.63 mL 13.26 mL
5 mM 0.27 mL 1.33 mL 2.65 mL
10 mM 0.13 mL 0.66 mL 1.33 mL
50 mM 0.03 mL 0.13 mL 0.27 mL

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Product Datasheets

Certificate of Analysis / Product Datasheet
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Safety Datasheet


References are publications that support the products' biological activity.

Shin et al (2014) Live-cell imaging of Pol II promoter activity to monitor gene expression with RNA IMAGEtag reporters. Nucleic Acids Res. 42 e90 PMID: 24753407

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