Description

3-Methyl-2-((E)-3-[1-[3-(Trimethylammonio)propyl]-4(1H)-pyridinylidene]-1-propenyl)-1,3-benzothiazol-3-ium diiodide is a specialized cationic dye and photosensitizer belonging to the cyanine dye family. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical component in advanced photonic and diagnostic applications. It is primarily utilized by researchers and manufacturers in the biotechnology, medical imaging, and material science sectors for developing next-generation optical devices and assays.

Application

• Fluorescent Labeling and Probes: Used as a high-performance fluorescent tag for biomolecules (e.g., proteins, nucleic acids) in bioassays and cellular imaging due to its excellent photostability and brightness.
• Photodynamic Therapy (PDT) Research: Acts as a potent photosensitizer in preclinical studies for cancer treatment, where it generates reactive oxygen species upon light irradiation to destroy targeted cells.
• Optical Data Storage: Employed in the research and development of advanced optical recording media, leveraging its NIR absorption for high-density data storage solutions.
• Non-Linear Optical Materials: Serves as a key chromophore in the synthesis of organic materials for photonics, including optical limiters and switches.
• Sensor Development: Integral to creating chemical and biological sensors that rely on fluorescence quenching or enhancement for detection.
• Dye-Sensitized Solar Cells (DSSC): Investigated as a potential sensitizing dye to enhance light-harvesting efficiency in photovoltaic research.

Basic Information

Product Name	3-Methyl-2-((E)-3-[1-[3-(Trimethylammonio)propyl]-4(1H)-pyridinylidene]-1-propenyl)-1,3-benzothiazol-3-ium diiodide
CAS No.	173357-16-9
Molecular Formula	C₂₂H₂₉I₂N₃S
Molecular Weight	637.35 g/mol
Synonyms	3-Methyl-2-((E)-3-(1-(3-(Trimethylammonio)propyl)-1,4-dihydropyridin-4-ylidene)prop-1-en-1-yl)-1,3-benzothiazol-3-ium diiodide; Cyanine dye 173357-16-9; NIR Cyanine Dye; Benzothiazolium, 3-methyl-2-[(1E)-3-[1-[3-(trimethylammonio)propyl]-1,4-dihydro-4-pyridinylidene]-1-propen-1-yl]-, diiodide; Trimethine cyanine dye; Photosensitizer 173357-16-9; Heptamethine cyanine dye analog; Thiazole orange derivative
EINECS	Contact for details

Quality Control

Our production of 3-Methyl-2-((E)-3-[1-[3-(trimethylammonio)propyl]-4(1H)-pyridinylidene]-1-propenyl)-1,3-benzothiazol-3-ium diiodide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for research and industrial use. Each lot undergoes comprehensive analytical characterization, including HPLC for purity, NMR for structural confirmation, and spectrophotometry for optical property verification. Certificates of Analysis (COA) detailing all test results are provided with every shipment to support your quality assurance and regulatory needs.

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 hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept sealed under an inert atmosphere (e.g., argon or nitrogen) when not in use to prevent degradation. For long-term stability, consider storage at 2-8°C.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Absorption Max (λmax)	Contact for details
Emission Max (λem)	Contact for details

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