Description

2-[5-[3,3-Dimethyl-1-(4-Sulfobutyl)-1,3-Dihydroindol-2-Ylidene]Penta-1,3-Dienyl]-3,3-Dimethyl-1-(4-Sulfobutyl)-3H-Indolium Inner Salt Sodium Salt is a high-purity, functional cyanine dye intermediate essential for advanced material science and life science applications. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical building block for sophisticated optical technologies. It is primarily sought after by manufacturers and R&D teams in the photonics, biomedical imaging, and specialty chemical synthesis sectors.

Application

• NIR Fluorescent Dye Synthesis: A key precursor for synthesizing heptamethine cyanine dyes used in bioimaging and diagnostics.
• Optical Sensing Probes: Used in the development of sensitive probes for detecting ions, small molecules, and biomolecules.
• Laser Materials: Incorporated into gain media for tunable dye lasers operating in the near-infrared spectrum.
• Photodynamic Therapy (PDT) Agents: Serves as a starting material for photosensitizers used in cancer treatment research.
• Non-Linear Optical Materials: Used in research for developing materials with specific light-modulating properties.
• Labeling Reagents: Functionalized for conjugating to proteins, antibodies, or nanoparticles for in vitro and in vivo tracking.

Basic Information

Item	Details
Product Name	2-[5-[3,3-Dimethyl-1-(4-Sulfobutyl)-1,3-Dihydroindol-2-Ylidene]Penta-1,3-Dienyl]-3,3-Dimethyl-1-(4-Sulfobutyl)-3H-Indolium Inner Salt Sodium Salt
CAS No.	120768-44-7
Molecular Formula	C37H47N2O6S2Na
Molecular Weight	702.90 g/mol
Synonyms	IR-783; IR 783; IR783; 1,1',3,3,3',3'-Hexamethyl-4,4',5,5'-dibenzo-2,2'-indotricarbocyanine-7,7'-disulfonic Acid, Sodium Salt; 2-[5-[3,3-Dimethyl-1-(4-sulfobutyl)indolin-2-ylidene]penta-1,3-dienyl]-3,3-dimethyl-1-(4-sulfobutyl)-3H-indolium, inner salt, sodium salt; SDB-003; Heptamethine cyanine dye IR-783; Cyanine dye, IR-783
EINECS	Contact for details

Quality Control

Our 2-[5-[3,3-Dimethyl-1-(4-Sulfobutyl)-1,3-Dihydroindol-2-Ylidene]Penta-1,3-Dienyl]-3,3-Dimethyl-1-(4-Sulfobutyl)-3H-Indolium Inner Salt Sodium Salt is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and spectral analysis for identity confirmation, to ensure consistent performance and batch-to-batch reliability. Certificates of Analysis (COA) with detailed specifications are provided and available upon request.

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) and light-sensitive; therefore, containers must be kept sealed in a desiccated environment and handled under low-light conditions to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	λmax conforms
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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