Cy3 NHS ester

• CAT Number: I019355
• CAS Number: 1393363-07-9
• Molecular Formula: C₃₄H₄₀ClN₃O₄
• Molecular Weight: 590.15
• Purity: ≥95%
• IUPAC Name: (2,5-dioxopyrrolidin-1-yl) 6-[(2Z)-3,3-dimethyl-2-[(E)-3-(1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]indol-1-yl]hexanoate;chloride
• InChI: InChI=1S/C34H40N3O4.ClH/c1-33(2)24-14-8-10-16-26(24)35(5)28(33)18-13-19-29-34(3,4)25-15-9-11-17-27(25)36(29)23-12-6-7-20-32(40)41-37-30(38)21-22-31(37)39;/h8-11,13-19H,6-7,12,20-23H2,1-5H3;1H/q+1;/p-1
• InChIKey: KWDMHANYPGHTLW-UHFFFAOYSA-M
• SMILES: CC1(C2=CC=CC=C2[N+](=C1C=CC=C3C(C4=CC=CC=C4N3CCCCCC(=O)ON5C(=O)CCC5=O)(C)C)C)C.[Cl-]

Cy3 NHS ester（Cat No.:I019355）is a high-purity, fluorescent dye widely used in biochemical and molecular biology research. This molecule features a cyanine dye core, conjugated to an N-hydroxysuccinimide (NHS) ester, making it highly reactive with primary amines. Cy3 NHS ester is commonly used for labeling proteins, antibodies, and nucleic acids, enabling fluorescence-based detection and imaging applications. Its bright fluorescence and stability make it ideal for techniques such as fluorescence microscopy, flow cytometry, and FRET (Förster Resonance Energy Transfer) studies. Cy3 NHS ester is essential for precise and sensitive biological assays.