Description

2-[2-[2-CHLORO-3-[[1,3-DIHYDRO-1,1-DIMETHYL-3-(4-SULFOBUTYL)-2H-BENZ[E]INDOL-2-YLIDENE]ETHYLIDENE]-1-CYCLOPENTEN-1-YL]-ETHENYL]-1,1-DIMETHYL-3-(4-SULFOBUTYL)-1H-BENZ[E]INDOLIUM, INNER SALT, SODIUM SALT is a high-purity, functional cyanine dye derivative designed for advanced photonic and electronic applications. Its core value lies in its exceptional light-absorbing and emitting properties, which are critical for performance in sensitive high-tech processes. This compound is essential for manufacturers and R&D facilities in the optical data storage, laser technology, and biomedical imaging sectors requiring precise and stable chromophores.

Application

• Optical Data Storage Media: As a key photosensitive component in recordable (CD-R, DVD-R) and high-density optical discs.
• Laser Dyes and Optical Filters: For tuning laser wavelengths and manufacturing precision optical filters due to its sharp absorption bands.
• Biomedical Imaging and Diagnostics: Utilized as a fluorescent probe or tag in bioassays, flow cytometry, and in vivo imaging applications.
• Non-Linear Optics (NLO): Serves as an active material in devices for optical switching, signal processing, and frequency conversion.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for targeted cancer treatments.
• Solar Cell and Photovoltaic Research: Used in the development of dye-sensitized solar cells (DSSCs) to enhance light harvesting.
• Security Inks and Dyes: Employed in high-security printing for banknotes, certificates, and brand protection due to its specific spectral signature.

Basic Information

Item	Details
Product Name	2-[2-[2-CHLORO-3-[[1,3-DIHYDRO-1,1-DIMETHYL-3-(4-SULFOBUTYL)-2H-BENZ[E]INDOL-2-YLIDENE]ETHYLIDENE]-1-CYCLOPENTEN-1-YL]-ETHENYL]-1,1-DIMETHYL-3-(4-SULFOBUTYL)-1H-BENZ[E]INDOLIUM, INNER SALT, SODIUM SALT
CAS No.	162093-45-0
Molecular Formula	C47H52ClN2O6S2•Na
Molecular Weight	867.51 g/mol
Synonyms	Cy5 carboxylic acid; Sulfo-Cyanine5 acid; 2-[2-[2-Chloro-3-[(1,3-dihydro-1,1-dimethyl-3-(4-sulfobutyl)-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-1,1-dimethyl-3-(4-sulfobutyl)-1H-benz[e]indolium, hydroxide, inner salt, sodium salt; Cy5 NHS ester precursor; Near-infrared cyanine dye acid; Sodium 1,1-dimethyl-2-[2-[2-(1,1,3-trimethyl-1,3-dihydro-benz[e]indol-2-ylidene)ethylidene]-3-(4-sulfobutyl)-1-cyclopenten-1-yl]ethenyl]-3-(4-sulfobutyl)-1H-benz[e]indolium chloride (isomeric form); CAS 162093-45-0.
EINECS	Contact for details

Quality Control

Our production of this cyanine dye adheres to strict in-process controls to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent degradation from atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines
Absorption Max (λmax)	646 - 652 nm (in methanol)
Emission Max	664 - 670 nm (in methanol)

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