Description

n-(m-Peg4)-N'-(Amino-Peg3)-Cy5 is a heterobifunctional polyethylene glycol (PEG) linker conjugated to the cyanine dye Cy5, designed for advanced bioconjugation and labeling applications. This compound is engineered to provide a hydrophilic spacer and a reactive amino group, facilitating the stable attachment of biomolecules for imaging and diagnostic purposes. It is an essential reagent for researchers and developers in the fields of biopharmaceuticals, in vitro diagnostics (IVD), and life science research, enabling the creation of targeted fluorescent probes and therapeutic conjugates.

Application

• Fluorescent Labeling of Biomolecules: Conjugation to antibodies, proteins, peptides, and oligonucleotides for fluorescence microscopy, flow cytometry, and in vivo imaging.
• Development of Diagnostic Assays: Key component in the synthesis of fluorescent probes and sensors for ELISA, lateral flow assays, and other IVD platforms.
• Drug Delivery & Bioconjugation: Used as a linker to attach therapeutic payloads (e.g., drugs, toxins) to targeting ligands like antibodies (ADC development) or nanoparticles.
• Biomaterial & Surface Modification: Functionalization of surfaces, hydrogels, and nanoparticles with fluorescent markers for tracking and biocompatibility studies.
• Live-Cell & Super-Resolution Imaging: Creation of cell-permeable or targeted probes for real-time tracking of cellular processes and high-resolution imaging techniques.
• Nucleic Acid Labeling: Fluorescent tagging of DNA and RNA for sequencing, FISH (Fluorescence In Situ Hybridization), and PCR applications.

Basic Information

Item	Detail
Product Name	n-(m-Peg4)-N'-(Amino-Peg3)-Cy5
CAS No.	2107272-96-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Cy5-PEG4-PEG3-Amine; Amino-PEG3-PEG4-Cy5; Cyanine5-PEG7-amine; m-PEG4-NH-PEG3-Cy5; Cy5-PEG7-NH2; Heterobifunctional Cy5-PEG-Amine; 7-Amino-4,7-dioxoheptyl 2,5,8,11-tetraoxatetradecan-14-oate Cy5 conjugate; N-(3-{2-[2-(2-{3-[(1E,3E,5E)-5-(1,3-Dihydro-3,3-dimethyl-1-propyl-2H-indol-2-ylidene)-1,3-pentadien-1-yl]-1-propyl-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene}ethoxy)ethoxy]ethoxy}propyl)-N'-(3,6,9,12-tetraoxapentadec-1-yl)urea
EINECS	Contact for details

Quality Control

Our n-(m-Peg4)-N'-(Amino-Peg3)-Cy5 is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR for structural confirmation, and mass spectrometry, to ensure identity, strength, and performance. Certificates of Analysis (COA) detailing all specifications are provided to guarantee compliance with your research and development requirements.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below under desiccant. This product is hygroscopic (moisture-sensitive) and light-sensitive. Allow the vial to warm to room temperature in a desiccator before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	Dark blue to purple solid or film
Identification (HPLC/MS)	Complies
Purity (HPLC)	≥ 95%
Extinction Coefficient	Contact for details
Fluorescence Emission	~670 nm
Moisture Content (KF)	Contact for details
Solubility	Soluble in DMSO, DMF, water, methanol

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.