Description

Cy5 Se(Mono So3) CAS NO 400051-84-5 is a sulfonated, selenium-containing derivative of the cyanine dye Cy5, engineered for enhanced water solubility and photostability. This modification is critical for applications requiring minimal non-specific binding and high signal-to-noise ratios in aqueous environments. It is an essential reagent for researchers and manufacturers in the fields of bioimaging, diagnostics, and flow cytometry who require reliable, high-performance fluorescent labeling.

Application

• Fluorescent Labeling of Biomolecules: Conjugation to antibodies, proteins, peptides, and oligonucleotides for detection and quantification.
• Bioimaging and Microscopy: Used as a near-infrared fluorescent probe for in vitro and in vivo cellular and tissue imaging.
• Flow Cytometry: Staining of cell surface markers or intracellular targets for multiparameter analysis.
• Diagnostic Assay Development: Key component in the development of fluorescent immunoassays (FLISA) and biosensors.
• Nucleic Acid Detection: Labeling for fluorescence in situ hybridization (FISH) and real-time PCR applications.
• Drug Delivery Tracking: Conjugation to nanoparticles or therapeutic agents to monitor biodistribution and pharmacokinetics.

Basic Information

Product Name	Cy5 Se(Mono So3) CAS NO 400051-84-5
CAS No.	400051-84-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Cy5 Selenium Mono Sulfonate; Sulfo-Cy5 Selenium Dye; Cy5-Se-SO3; Cy5 Selenol Derivative; Near-IR Selenium Cyanine Dye; Water-soluble Cy5 Selenium Probe; Fluorescent Selenol Label
EINECS	Contact for details

Quality Control

Our Cy5 Se(Mono 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 absorbance and fluorescence verification. Certificates of Analysis (COA) detailing batch-specific results are available upon request to ensure traceability and compliance with your research or production standards.

Storage

Preserve in a tightly closed container, protected from light. Store desiccated at -20°C or below for long-term stability. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	Dark green to blue solid
Identification (HPLC/MS)	Conforms to structure
Purity (HPLC)	≥ 95%
Absorption Maximum (λmax)	~649 - 652 nm
Emission Maximum (λem)	~665 - 670 nm
Extinction Coefficient (ε)	Contact for details
Solubility	Soluble in water, PBS, DMSO
Moisture Content (KF)	≤ 5.0%

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