Description

n-Methyl-N'-(Azide-Peg3)-Cy3 is a bifunctional cyanine dye derivative designed for advanced bioconjugation and labeling applications. This compound matters for researchers and developers requiring precise, stable, and efficient tagging of biomolecules, such as proteins and oligonucleotides, for detection and analysis. It is primarily needed by professionals in the pharmaceutical, biotechnology, and life sciences industries engaged in assay development, diagnostics, and bioimaging.

Application

• Bioconjugation Reagent: For site-specific labeling of proteins, antibodies, and peptides via click chemistry (azide-alkyne cycloaddition).
• Fluorescent Probe Synthesis: As a key intermediate in the preparation of targeted fluorescent probes for cellular and in vivo imaging.
• Diagnostic Assay Development: Used in the fabrication of fluorescent biosensors and lateral flow assays for high-sensitivity detection.
• Nucleic Acid Labeling: For tagging oligonucleotides (DNA, RNA) with a near-infrared fluorophore for techniques like FISH and real-time PCR.
• Polymer and Material Science: Functionalization of surfaces, nanoparticles, or hydrogels with a fluorescent tag for tracking and characterization.
• Drug Delivery Research: Conjugation to drug carriers or linkers to visualize targeting and biodistribution in preclinical studies.

Basic Information

Product Name	n-Methyl-N'-(Azide-Peg3)-Cy3
CAS No.	2107273-16-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Cy3-PEG3-Azide; N-Methyl-N'-(Azido-PEG3)-Cy3; Azide-PEG3-Cy3 Methyl Ester; 3-(Azido-PEG3)-N-methyl-Cy3; Cyanine3 Azide PEG3; Cy3 NHS Ester Azide PEG3 derivative; Sulfo-Cy3 Azide PEG3 analog; Near-IR fluorescent azide linker
EINECS	Contact for details

Quality Control

Our n-Methyl-N'-(Azide-Peg3)-Cy3 undergoes rigorous quality testing to ensure compliance with industry standards for research and diagnostic use. Each batch is characterized by advanced analytical techniques to confirm identity, purity, and functional performance. Certificates of Analysis (COA) detailing purity, absorbance/fluorescence profiles, and functional group integrity are available upon request.

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 condensation and moisture uptake.

Specification

Item	Specification
Appearance	Dark green to purple solid or film
Identification (HPLC/MS)	Conforms to structure
Purity (HPLC)	≥ 95%
Absorption Maximum (λmax)	~550 nm
Emission Maximum (λem)	~570 nm
Extinction Coefficient (ε)	Contact for details
Functional Group Integrity (Azide)	≥ 90% by NMR or IR
Water Content (KF)	≤ 1.0%

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