Description

5-Methoxy-2,3,3-Trimethyl-1-(4-Sulfobutyl)-3H-indolium is a specialized sulfobutyl indole derivative, a key intermediate in the synthesis of functional dyes and advanced materials. Its value lies in its unique molecular structure, which imparts excellent water solubility and reactive properties, making it crucial for creating high-performance colorants. This compound is primarily needed by manufacturers in the dye and pigment, photographic, and specialty chemical industries for developing products with enhanced stability and application-specific characteristics.

Application

• Cyanine Dye Synthesis: A critical precursor for manufacturing near-infrared (NIR) fluorescent cyanine dyes used in bioimaging and medical diagnostics.
• Photosensitizer Production: Used in the creation of photosensitizing agents for photographic films, printing plates, and photopolymerization initiators.
• Functional Textile Dyes: Serves as an intermediate for producing reactive dyes with improved wash-fastness and brightness for synthetic fibers.
• Laser and Optical Applications: A building block for dyes utilized in laser technology, optical data storage, and non-linear optical materials.
• Bioconjugation Probes: Employed in synthesizing water-soluble fluorescent labels and tags for antibody and protein conjugation in assay development.
• Research & Development: Used as a standard or intermediate in organic synthesis and material science research for novel chromophore development.

Basic Information

Product Name	5-Methoxy-2,3,3-Trimethyl-1-(4-Sulfobutyl)-3H-indolium
CAS No.	54136-27-5
Molecular Formula	C₁₆H₂₃NO₄S
Molecular Weight	325.42 g/mol
Synonyms	5-Methoxy-2,3,3-trimethyl-1-(4-sulfobutyl)indolenine; 1-(4-Sulfobutyl)-5-methoxy-2,3,3-trimethyl-3H-indolium; 5-Methoxy-2,3,3-trimethyl-1-sulfobutylindolenine; Sulfobutyl Indole Derivative; Cyanine Dye Intermediate IR-783 Precursor; Indolium, 5-methoxy-2,3,3-trimethyl-1-(4-sulfobutyl)-; 3H-Indolium, 5-methoxy-2,3,3-trimethyl-1-(4-sulfobutyl)-
EINECS	Contact for details

Quality Control

Our production of 5-Methoxy-2,3,3-Trimethyl-1-(4-Sulfobutyl)-3H-indolium adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. The material is characterized and released against comprehensive specifications, including identity confirmation by spectroscopic methods and purity assessment by HPLC. Certificates of Analysis (COA) detailing all critical quality attributes are provided with each 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 area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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