Description

Sodium 3-(2-([3-(3-Sulfonatopropyl)-1,3-Benzothiazol-2(3H)-Ylidene]Methyl)[1]Benzothieno[2,3-D][1,3]Thiazol-3-Ium-3-Yl)-1-Propanesulfonate is a high-purity, water-soluble cyanine dye derivative, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is engineered for superior photostability and quantum yield, making it an essential functional material for advanced optical applications. It is primarily required by manufacturers and research institutions in the fields of biotechnology, medical diagnostics, and optoelectronics.

Application

• NIR Fluorescent Probes & Labels: Used as a critical component in the synthesis of fluorescent tags for bioimaging, flow cytometry, and in vivo diagnostic assays.
• Optical Sensing Materials: Incorporated into sensor films and devices for the detection of ions, gases, and biomolecules due to its sensitive spectral shifts.
• Laser Dyes & Photonic Materials: Serves as a gain medium in tunable dye lasers and as an active material in non-linear optical (NLO) applications.
• Solar Cell & OLED Research: Investigated for use in dye-sensitized solar cells (DSSCs) and organic light-emitting diodes (OLEDs) as a light-harvesting or emissive layer.
• Photodynamic Therapy (PDT) Agents: Acts as a potential photosensitizer in the development of next-generation therapeutic agents for cancer treatment.
• Security Inks & Taggants: Utilized in high-security printing and anti-counterfeiting measures because of its unique and difficult-to-replicate optical signature.

Basic Information

Product Name	Sodium 3-(2-([3-(3-Sulfonatopropyl)-1,3-Benzothiazol-2(3H)-Ylidene]Methyl)[1]Benzothieno[2,3-D][1,3]Thiazol-3-Ium-3-Yl)-1-Propanesulfonate
CAS No.	183365-76-6
Molecular Formula	C27H23N2NaO6S4
Molecular Weight	638.72 g/mol
Synonyms	IR-783; Benzothieno[2,3-d]thiazolium, 2-[2-[3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-3-(3-sulfopropyl)-, inner salt, sodium salt; SDB 783; NIR-783 Dye; Sodium 3-(2-((E)-2-(1,3-Dihydro-3-(3-sulfopropyl)-2H-benzothiazol-2-ylidene)ethylidene)-1-cyclohexen-1-yl)-1-propanesulfonate (related structure); Heptamethine cyanine dye sulfonate; 3H-Indolium, 2-[2-[3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-3-(3-sulfopropyl)-, inner salt, sodium salt
EINECS	Contact for details

Quality Control

Every batch of our cyanine dye is manufactured under strict quality management systems. We provide comprehensive analytical data to ensure the product meets the high standards required for sensitive optical and biological applications. Certificates of Analysis (COA) detailing purity, identity, and spectral properties are supplied with each shipment. Our quality protocols are designed to support compliance with ISO 9001 and relevant Good Manufacturing Practice (GMP) guidelines for research-grade chemicals.

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 compound is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); prolonged exposure to air, moisture, or strong light should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax: 783 ± 5 nm
Purity (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, dark blue solution at 1 mg/mL

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