Description

Cy5 Se(Tri So3) CAS NO 881178-43-4 is a sulfonated, selenium-containing cyanine dye derivative designed for superior aqueous solubility and photostability. This compound is engineered for high-performance applications requiring stable, bright fluorescence in aqueous and biological environments. It is an essential reagent for researchers and manufacturers in the fields of bioconjugation, in vivo imaging, and advanced diagnostic assay development.

Application

• Fluorescent Labeling and Bioconjugation: Covalent attachment to proteins, antibodies, oligonucleotides, and other biomolecules for detection and analysis.
• In Vivo and In Vitro Imaging: Used as a near-infrared (NIR) probe for non-invasive biological imaging and tracking studies.
• Diagnostic Assay Development: Key component in the formulation of fluorescent lateral flow assays (LFAs), ELISA, and other immunoassays.
• Flow Cytometry and Microscopy: Cell staining and intracellular labeling for analysis by flow cytometry and fluorescence microscopy.
• Nucleic Acid Detection: Labeling of primers and probes for real-time PCR (qPCR) and fluorescence in situ hybridization (FISH).
• Material Science Research: Incorporation into polymers and nanoparticles to create functional fluorescent materials.

Basic Information

Product Name	Cy5 Se(Tri So3)
CAS No.	881178-43-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sulfo-Cyanine5 Selenol; Cy5 Selenol Tri-sulfonate; Selenium-substituted Cy5 sulfonate; Cy5-Se(SO3)3; Near-infrared fluorescent selenol dye; Water-soluble Cy5 derivative; Tri-sulfonated Cy5 selenol; Bioconjugatable Cy5 dye
EINECS	Contact for details

Quality Control

Our Cy5 Se(Tri So3) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, mass spectrometry for identity confirmation, and spectrophotometry for optical property validation. We provide Certificates of Analysis (COA) with every shipment, detailing all critical specifications to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C or as indicated on the label. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature in a desiccator before opening to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark green to blue solid
Identification (HPLC/MS)	Conforms to reference standard
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Absorption Maximum (λmax)	~649 nm ± 3 nm
Emission Maximum (λem)	~670 nm ± 3 nm
Extinction Coefficient (ε)	Contact for details

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