Sulfo-Cy7.5 NHS ester

• CAT Number: I043072
• CAS Number: 2736437-44-6
• Molecular Formula: C49H50KN3O16S4
• Molecular Weight: 1104.29
• Purity: ≥95%
• Synonyms: potassium;(2Z)-3-[6-(2,5-dioxopyrrolidin-1-yl)oxy-6-oxohexyl]-1,1-dimethyl-2-[(2Z)-2-[3-[(E)-2-(1,1,3-trimethyl-6,8-disulfobenzo[e]indol-3-ium-2-yl)ethenyl]cyclohex-2-en-1-ylidene]ethylidene]benzo[e]indole-6,8-disulfonate
• InChI: InChI=1S/C49H51N3O16S4.K/c1-48(2)41(50(5)37-17-15-33-35(46(37)48)25-31(69(56,57)58)27-39(33)71(62,63)64)19-13-29-10-9-11-30(24-29)14-20-42-49(3,4)47-36-26-32(70(59,60)61)28-40(72(65,66)67)34(36)16-18-38(47)51(42)23-8-6-7-12-45(55)68-52-43(53)21-22-44(52)54;/h13-20,24-28H,6-12,21-23H2,1-5H3,(H3-,56,57,58,59,60,61,62,63,64,65,66,67);/q;+1/p-1
• InChIKey: HDBJLDCQQJVKRA-UHFFFAOYSA-M
• SMILES: CC1(C(=[N+](C2=C1C3=C(C=C2)C(=CC(=C3)S(=O)(=O)O)S(=O)(=O)O)C)/C=C/C4=C/C(=C\C=C/5\C(C6=C(N5CCCCCC(=O)ON7C(=O)CCC7=O)C=CC8=C6C=C(C=C8S(=O)(=O)[O-])S(=O)(=O)[O-])(C)C)/CCC4)C.[K+]

Sulfo-Cy7.5 NHS ester（Cat No.:I043072）is a fluorescent dye commonly used in bioimaging and molecular biology applications. It contains a sulfonate group, making it water-soluble, and the NHS ester reactive group, which allows it to covalently bind to amine-containing molecules, such as proteins, peptides, or antibodies. Once conjugated, the dye emits fluorescence in the near-infrared (NIR) region, typically around 780 nm, making it useful for non-invasive imaging in vivo. Sulfo-Cy7.5 NHS ester is widely used in fluorescence-based detection, flow cytometry, and in vivo imaging studies for tracking and quantifying biomolecular interactions.