Description

3H-Indolium, 1-(2-Hydroxyethyl)-2,3,3-Trimethyl-, Bromide is a quaternary ammonium salt derivative of indole, characterized by its cationic structure. This compound is valued for its role as a key intermediate in the synthesis of functional dyes and as a versatile building block in advanced organic chemistry. It is primarily sought by manufacturers in the specialty chemicals, dye and pigment, and pharmaceutical research sectors for developing products with specific optical or biological properties.

Application

• Cyanine Dye Synthesis: A crucial precursor for manufacturing heptamethine cyanine dyes, which are widely used in bioimaging, fluorescence labeling, and optical data storage.
• Photosensitizer Production: Serves as an intermediate in creating compounds for photodynamic therapy and other light-activated medical treatments.
• NIR-Absorbing Materials: Used in the development of near-infrared (NIR) absorbing agents for security inks, optical filters, and laser applications.
• Organic Semiconductor Research: Acts as a functional moiety in the design and synthesis of novel organic electronic materials.
• Bioconjugation Chemistry: Utilized to create reactive dyes for labeling proteins, antibodies, and nucleic acids in diagnostic assays.
• Ionic Liquid Synthesis: Can be employed as a component in the formulation of task-specific ionic liquids for catalysis or separation processes.

Basic Information

Product Name	3H-Indolium, 1-(2-Hydroxyethyl)-2,3,3-Trimethyl-, Bromide
CAS No.	29636-94-0
Molecular Formula	C₁₃H₂₀BrNO
Molecular Weight	286.21 g/mol
Synonyms	1-(2-Hydroxyethyl)-2,3,3-trimethyl-3H-indolium bromide; 2,3,3-Trimethyl-1-(2-hydroxyethyl)-3H-indolium bromide; 3H-Indolium, 1-(2-hydroxyethyl)-2,3,3-trimethyl-, bromide (9CI); Cy3 amine precursor; Indocyanine green intermediate; IR-783 precursor; NIR dye intermediate
EINECS	Contact for details

Quality Control

Our production of 3H-Indolium, 1-(2-Hydroxyethyl)-2,3,3-Trimethyl-, Bromide adheres to stringent internal quality standards to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Reddish-brown to dark green crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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