Description

Cy5 Dic18 is a near-infrared fluorescent dye derivative, specifically a cyanine dye with a long hydrophobic dicarboxylic acid chain. This compound is engineered for superior lipid membrane labeling and tracking applications due to its excellent photostability and high fluorescence quantum yield. It is an essential tool for researchers and developers in the life sciences, pharmaceuticals, and advanced materials sectors requiring precise, long-term cellular and vesicle imaging.

Application

• Lipid Membrane & Vesicle Labeling: For tracking liposomes, exosomes, and other lipid-based nanoparticles in drug delivery research.
• Cell Membrane Staining: Used in fluorescence microscopy and flow cytometry to visualize cell membranes and study membrane dynamics.
• Bio-conjugation & Probe Development: Serves as a fluorescent tag for synthesizing targeted probes, antibodies, or proteins.
• In Vivo Imaging: Suitable for near-infrared (NIR) fluorescence imaging in animal models due to deeper tissue penetration.
• Material Science Research: Applied in the development of fluorescent sensors and functional materials.
• Diagnostic Assay Development: Used as a key component in developing high-sensitivity diagnostic kits and assays.

Basic Information

Item	Detail
Product Name	Cy5 Dic18
CAS No.	75539-51-4
Molecular Formula	C58H85N3O4
Molecular Weight	888.33 g/mol
Synonyms	1,1'-Dioctadecyl-3,3,3',3'-Tetramethylindodicarbocyanine-5,5'-Dicarboxylic Acid; Cy5-DiC18; Cy5 DiC18(5) Carboxylic Acid; Cy5 DiIC18(5); DiIC18(5)-COOH; Cy5-C18; Lipophilic Cy5 Carboxylic Acid; NIR Fluorescent Lipid Probe
EINECS	Contact for details

Quality Control

Our Cy5 Dic18 is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity verification, to ensure it meets the high standards required for sensitive research and development applications. A Certificate of Analysis (COA) detailing identity, purity, and performance characteristics is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below under desiccated conditions for long-term stability. For short-term use, store at 2-8°C. Allow the product to equilibrate to room temperature before opening to prevent condensation.

Specification

Item	Specification
Appearance	Dark blue to purple solid or film
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Absorption Maximum (λmax)	646 - 652 nm
Emission Maximum	662 - 668 nm
Extinction Coefficient (ε)	≥ 200,000 L·mol⁻¹·cm⁻¹
Solubility	Soluble in DMSO, DMF, chloroform; sparingly soluble in alcohols

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