Description

2-(2-Ethoxy-1-Butenyl)-5-Phenyl-3-(3-Sulfobutyl)Benzoxazolium Inner Salt is a specialized benzoxazolium derivative featuring a zwitterionic (inner salt) structure. This compound is valued for its unique combination of a heterocyclic core, a sulfobutyl group, and an ethoxybutenyl side chain, which imparts specific solubility and reactivity profiles. It is primarily utilized in advanced material science and as a key intermediate in the synthesis of functional dyes, optical brighteners, and specialty polymers for high-performance applications.

Application

• Functional Dye Intermediate: A critical building block for synthesizing near-infrared (NIR) absorbing dyes, fluorescent markers, and laser dyes.
• Optical Brightener Precursor: Used in the manufacture of high-efficiency whitening agents for paper, textiles, and detergents.
• Polymer Modification: Serves as a monomer or additive to introduce sulfonate groups and chromophoric units into polymers, enhancing hydrophilicity, dyeability, or optical properties.
• Research & Development: Employed in academic and industrial R&D for exploring new photophysical materials, organic semiconductors, and sensor technologies.
• Specialty Chemical Synthesis: Acts as a versatile intermediate for creating complex molecules with tailored electronic and surface-active characteristics.

Basic Information

Product Name	2-(2-Ethoxy-1-Butenyl)-5-Phenyl-3-(3-Sulfobutyl)Benzoxazolium Inner Salt
CAS No.	63148-98-1
Molecular Formula	C23H27NO5S
Molecular Weight	429.53 g/mol
Synonyms	2-(2-Ethoxy-1-butenyl)-5-phenyl-3-(3-sulfobutyl)benzoxazolium hydroxide, inner salt; Benzoxazolium, 2-(2-ethoxy-1-butenyl)-5-phenyl-3-(3-sulfobutyl)-, inner salt; 3-(3-Sulfobutyl)-2-(2-ethoxy-1-butenyl)-5-phenylbenzoxazolium inner salt; 5-Phenyl-3-(3-sulfobutyl)-2-(2-ethoxyvinyl)benzoxazolium betaine (related structure); EBS Dye Intermediate; Sulfobutyl Benzoxazolium Salt.
EINECS	Contact for details

Quality Control

Our production of 2-(2-Ethoxy-1-Butenyl)-5-Phenyl-3-(3-Sulfobutyl)Benzoxazolium Inner Salt adheres to stringent in-process controls and final batch testing. Each lot is analyzed to ensure consistent chemical identity, purity, and performance. Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics are provided with every shipment to guarantee traceability and compliance with your technical requirements.

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 minimize exposure to atmospheric humidity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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