Sulfo-Cy7.5 NHS ester

Sulfo-Cy7.5 NHS ester, a near-infrared (NIR) water-soluble hydrophilic dye, is an NHS ester designed for modifying amine groups. It features a trimethylene bridge and a linker arm for attachment to proteins, peptides, and other molecules, making it suitable for NIR imaging applications research [1].

CC1(C(C2=CC(S(=O)([O-])=O)=C3)=C([N+](CCCCCC(ON4C(CCC4=O)=O)=O)=C1/C=C/C5=C/C(CCC5)=C/C=C6C(C)(C7=C(C=CC8=C(S(=O)([O-])=O)C=C(S(=O)(O)=O)C=C87)N/6C)C)C=CC2=C3S(=O)(O)=O)C.[K+]