ICG-Sulfo-OSu sodium

• CAT Number: I044546
• CAS Number: 190714-28-4
• Molecular Formula: C49H52N3NaO10S2
• Molecular Weight: 930.07
• Purity: ≥95%
• Synonyms: sodium;1-[6-[2-[(1E,3E,5E,7Z)-7-[1,1-dimethyl-3-(4-sulfonatobutyl)benzo[e]indol-2-ylidene]hepta-1,3,5-trienyl]-1,1-dimethylbenzo[e]indol-3-ium-3-yl]hexanoyloxy]-2,5-dioxopyrrolidine-3-sulfonate
• IUPAC Name: sodium;1-[6-[2-[7-[1,1-dimethyl-3-(4-sulfonatobutyl)benzo[e]indol-2-ylidene]hepta-1,3,5-trienyl]-1,1-dimethylbenzo[e]indol-3-ium-3-yl]hexanoyloxy]-2,5-dioxopyrrolidine-3-sulfonate
• InChI: InChI=1S/C49H53N3O10S2.Na/c1-48(2)41(23-9-6-5-7-10-24-42-49(3,4)46-37-22-15-13-20-35(37)27-29-39(46)51(42)31-17-18-32-63(56,57)58)50(38-28-26-34-19-12-14-21-36(34)45(38)48)30-16-8-11-25-44(54)62-52-43(53)33-40(47(52)55)64(59,60)61;/h5-7,9-10,12-15,19-24,26-29,40H,8,11,16-18,25,30-33H2,1-4H3,(H-,56,57,58,59,60,61);/q;+1/p-1
• InChIKey: PUIWPNXPCPENEL-UHFFFAOYSA-M
• SMILES: CC1(C(=[N+](C2=C1C3=CC=CC=C3C=C2)CCCCCC(=O)ON4C(=O)CC(C4=O)S(=O)(=O)[O-])C=CC=CC=CC=C5C(C6=C(N5CCCCS(=O)(=O)[O-])C=CC7=CC=CC=C76)(C)C)C.[Na+]

ICG-Sulfo-OSu sodium（Cat No.:I044546）is a water-soluble, sulfonated N-hydroxysuccinimide (NHS) ester derivative of indocyanine green (ICG), widely used in bioconjugation and imaging applications. It reacts efficiently with primary amines on proteins, peptides, or antibodies, enabling stable labeling for near-infrared (NIR) fluorescence imaging. Its sulfonate groups enhance aqueous solubility and reduce non-specific binding, making it ideal for in vivo imaging, surgical navigation, and biodistribution studies. ICG-Sulfo-OSu sodium provides high sensitivity and deep tissue penetration, offering a reliable tool for biomedical research, diagnostics, and targeted imaging applications in preclinical and clinical settings.