Description

Cy5-Se (Triethylamine Salt) CAS NO 1497420-70-8 is a chemically reactive, near-infrared fluorescent dye derivative, specifically functionalized with a selenium-containing group for advanced bioconjugation applications. This compound is engineered to provide superior labeling efficiency and stability for biomolecules, enabling high-sensitivity detection in complex biological systems. It is an essential reagent for researchers and developers in pharmaceutical discovery, diagnostic assay development, and advanced life science research who require reliable, high-performance probes.

Application

• Bioconjugation and Probe Synthesis: Primary use for covalent labeling of proteins, antibodies, peptides, and oligonucleotides via its reactive selenium chemistry.
• Near-Infrared (NIR) Fluorescence Imaging: Enables deep-tissue imaging, in vivo tracking, and non-invasive diagnostic applications due to its Cy5 fluorophore's emission profile.
• Diagnostic Assay Development: Critical for creating high-sensitivity ELISA, lateral flow assays, and other immunoassays requiring stable, bright NIR signals.
• Flow Cytometry and Cell Sorting: Used to label cell surface markers or intracellular targets for analysis and isolation of specific cell populations.
• Drug Delivery and Pharmacokinetic Studies: Tracks the distribution, targeting, and clearance of therapeutic conjugates in preclinical models.
• Biomaterial and Biosensor Functionalization: Incorporates fluorescence signaling capabilities into nanomaterials, chips, and sensor surfaces.

Basic Information

Product Name	Cy5-Se (Triethylamine Salt)
CAS No.	1497420-70-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Sulfo-Cyanine5 Selenol; Cy5 Selenol TEA Salt; Cyanine5 selenol triethylamine salt; NIR dye selenol derivative; Reactive Cy5 selenium compound; Selenol-functionalized Cy5 dye; 2-[(1E,3E)-5-[(1E,3E)-3-(1-selenocyanato-3-sulfonatopropyl)-1,3-butadienyl]-1,3-pentadienyl]-3-ethyl-1,1-dimethyl-1H-benz[e]indol-3-ium triethylamine salt
EINECS	Contact for details

Quality Control

Our Cy5-Se (Triethylamine Salt) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR for structural confirmation, and mass spectrometry for identity verification, to ensure consistent high performance and batch-to-batch reproducibility. Certificates of Analysis (COA) detailing all specifications 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). Allow the vial to equilibrate to room temperature in a dry environment before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	Dark blue to dark green solid
Identification (HPLC/MS)	Conforms to reference standard
Purity (HPLC)	≥ 95%
Water Content (KF)	≤ 2.0%
Extinction Coefficient	Contact for details
Fluorescence Emission	~670 nm

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