N-(m-PEG4)-N'-(PEG4-acid)-Cy5

N-(m-PEG4)-N'-(PEG4-acid)-Cy5 is a near infrared (NIR) fluorescent Cy 5 labeled PEG linker containing free terminal carboxyl acid. Terminal carboxylic acid can react with primary amine groups in the presence of of activators (e.g. EDC, or HATU) to form a stable amide bond. The hydophilic PEG spacer increases solubility in aqueous media. Cy5 labeled PEG linker can be easily traced from its blue color and strong fluorescence.

• Supplier: BOC Sciences
• Product #: A17-0174
• Cas: 2107273-32-3
• Molecular Weight: 829.5
• Molecular Formula: C45H65ClN2O10
• Canonical SMILES: CC1(C2=CC=CC=C2[N+](=C1C=CC=CC=C3C(C4=CC=CC=C4N3CCOCCOCCOCCOCCC(=O)O)(C)C)CCOCCOCCOCCOC)C.[Cl-]