Description

2-[n-[p-(Dimethylamino)Phenyl]Formimidoyl]-3-Ethylbenzothiazolium Ethyl Sulphate is a specialized cationic dye intermediate and a key precursor for cyanine dyes. This compound is valued for its role in synthesizing near-infrared (NIR) absorbing and fluorescent dyes with high molar absorptivity. It is primarily required by manufacturers in the imaging, optical data storage, and biomedical diagnostics sectors, where precise chromophore performance is critical.

Application

• Cyanine Dye Synthesis: A crucial building block for producing heptamethine and other polymethine cyanine dyes.
• NIR Fluorescent Probes: Used in the development of fluorescent labels and probes for bioimaging and life science research.
• Optical Recording Media: Serves as a key material in the formulation of dyes for recordable CDs, DVDs, and advanced optical data storage.
• Laser Absorbers: Employed in the production of materials designed to absorb specific laser wavelengths for protective and filtering applications.
• Photodynamic Therapy (PDT) Agents: A precursor for photosensitizers used in certain medical therapeutic applications.
• Non-Linear Optical Materials: Used in research and development of materials for photonics and optoelectronic devices.

Basic Information

Product Name	2-[n-[p-(Dimethylamino)Phenyl]Formimidoyl]-3-Ethylbenzothiazolium Ethyl Sulphate
CAS No.	29770-19-2
Molecular Formula	C20H25N3O4S2
Molecular Weight	435.56 g/mol
Synonyms	3-Ethyl-2-[3-(4-dimethylaminophenyl)-2-propenylidene]benzothiazolium ethyl sulfate; 2-[3-[4-(Dimethylamino)phenyl]-2-propen-1-ylidene]-3-ethyl-1,3-benzothiazolium ethyl sulfate; Cyanine dye precursor 29770-19-2; NIR dye intermediate; Benzothiazolium, 3-ethyl-2-[3-[4-(dimethylamino)phenyl]-2-propenylidene]-, ethyl sulfate; 2-[N-[p-(Dimethylamino)phenyl]formimidoyl]-3-ethylbenzothiazolium ethyl sulfate
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and high purity, which is essential for downstream dye performance. Quality is verified through analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark green to blue-green crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Solubility	Soluble in polar organic solvents (e.g., methanol, DMSO)

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