Description

2-[2-[2-Chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2H-indol-2-ylidene]ethylidene]-1-cyclopenten-1-yl]ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3H-indolium inner salt sodium salt is a high-purity, functional cyanine dye derivative, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is engineered for applications requiring precise optical characteristics and excellent photostability. It is a critical material for researchers and manufacturers in the fields of biotechnology, medical diagnostics, and advanced material science.

Application

• NIR Fluorescent Probes & Labels: Used as a key component in the synthesis of fluorescent tags for bioimaging, flow cytometry, and in vivo imaging applications.
• Optical Sensing Materials: Incorporated into sensor films and devices for the detection of specific analytes, leveraging its sensitive spectral shifts.
• Photodynamic Therapy (PDT) Research: Serves as a potential photosensitizer or a building block for developing new agents in photomedicine research.
• Laser Dye & Optical Recording Media: Utilized in the formulation of dyes for tunable lasers and as a functional material in data storage technologies.
• Nonlinear Optical Materials: Employed in the development of materials for photonics and optoelectronics due to its large molecular polarizability.
• Polymer & Nanomaterial Functionalization: Acts as a modifier to impart specific optical properties to polymers, nanoparticles, and quantum dots for specialized applications.

Basic Information

Item	Details
Product Name	2-[2-[2-Chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2H-indol-2-ylidene]ethylidene]-1-cyclopenten-1-yl]ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3H-indolium inner salt sodium salt
CAS No.	757960-10-4
Molecular Formula	C37H45ClN2NaO6S2
Molecular Weight	735.33 g/mol
Synonyms	IR-783; IR 783 dye; SDB 783; NIR-783; Cyanine dye IR-783; 1-(4-Sulfobutyl)-2-[3-[2-[1-(4-sulfobutyl)-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene]ethylidene]-2-chloro-1-cyclopenten-1-yl]ethenyl]-3,3-dimethyl-3H-indolium hydroxide, inner salt, sodium salt; Sodium 2-[2-[2-chloro-3-[(1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2H-indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3H-indolium
EINECS	Contact for details

Quality Control

Every batch of our cyanine dye products undergoes rigorous analytical testing to ensure identity, purity, and performance consistency. We employ advanced techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance/fluorescence profiles, and impurity limits is provided with each 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). Due to its hygroscopic nature, the container should be kept in a desiccated environment to prevent moisture uptake, which can affect stability and performance. Keep away from incompatible materials.

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 %
Absorption Max (λmax)	783 nm ± 5 nm (in Methanol)
Extinction Coefficient (ε)	≥ 200,000 L·mol⁻¹·cm⁻¹
Heavy Metals (as Pb)	≤ 20 ppm

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