Description

Cy5 Di Et CAS NO 17094-16-5 is a high-purity cyanine dye derivative, specifically a diethyl-substituted carbocyanine compound, widely recognized for its strong near-infrared fluorescence. This product is essential for advanced research and diagnostic applications due to its excellent photostability and high molar extinction coefficient. It is primarily needed by biotechnology, pharmaceutical, and diagnostic kit manufacturers for labeling, bioimaging, and assay development.

Application

• Fluorescent Labeling: Covalent conjugation to antibodies, proteins, peptides, and oligonucleotides for detection and quantification.
• Bioimaging & Microscopy: Used as a near-infrared (NIR) probe for in vitro and in vivo cellular and tissue imaging due to deep tissue penetration.
• Diagnostic Assays: Key component in the development of fluorescence-based immunoassays (FLISA), lateral flow tests, and biosensors.
• Flow Cytometry: Employed as a fluorescent tag for cell sorting, immunophenotyping, and receptor studies.
• Nucleic Acid Detection: Labeling of DNA and RNA probes for fluorescence in situ hybridization (FISH) and real-time PCR applications.
• Material Science: Incorporation into polymers and nanoparticles to create functional fluorescent materials for sensing and tracking.

Basic Information

Product Name	Cy5 Di Et
CAS No.	17094-16-5
Molecular Formula	C₃₃H₄₀IN₂⁺
Molecular Weight	607.59 g/mol (as iodide salt)
Synonyms	Cy5 Diethyl; 1,1'-Diethyl-3,3,3',3'-tetramethyl-4,5,4',5'-dibenzo-2,2'-indodicarbocyanine Iodide; Diethyl Cy5; Cy5 Diethylcarbocyanine Iodide; Sulfo-Cy5 Diethyl? (common search variant); NIR-664 Dye (related class); Carbocyanine Dye Cy5 DiEt; 17094-16-5
EINECS	Contact for details

Quality Control

Our Cy5 Di Et is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance. Each lot undergoes comprehensive analytical testing, including HPLC for purity, spectrophotometry for absorbance/fluorescence verification, and identity confirmation. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below under an inert atmosphere (e.g., argon or nitrogen) to prevent oxidation and degradation. For long-term stability, store desiccated. Allow the vial to equilibrate to room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	Dark green to blue solid
Identification (HPLC)	Conforms to reference standard
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Absorbance (λmax)	649 - 655 nm
Emission (λmax)	665 - 675 nm
Extinction Coefficient (ε)	≥ 200,000 L·mol⁻¹·cm⁻¹
Moisture Content (KF)	≤ 2.0 %

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