Description

3-[4-(Diethylamino)Phenyl]-3-(1-Ethyl-2-Methyl-1H-Indol-3-Yl)Phthalide is a high-purity, specialized organic compound belonging to the class of phthalide derivatives, valued for its unique chromogenic and photophysical properties. This compound serves as a critical functional material and advanced intermediate in the development of innovative color-changing technologies. It is primarily sought after by manufacturers and R&D departments in the thermochromic and photochromic materials, specialty dyes, and advanced sensor industries.

Application

• Thermochromic Pigments & Inks: A key leuco dye precursor for manufacturing temperature-sensitive color-changing materials used in packaging, textiles, and novelty products.
• Photochromic Applications: Used in the synthesis of compounds for lenses, security printing, and smart windows that change color upon exposure to UV light.
• Pressure-Sensitive & Carbonless Copy Paper: Acts as a core color-forming agent in the development of specialty papers for receipts, forms, and recording systems.
• Electrochromic Device Research: Investigated as an active component in materials for displays and smart glass that change color with an applied electric field.
• Chemical Sensing & Biosensing: Utilized in the design of molecular probes and sensor materials that exhibit a colorimetric response to specific analytes.
• Advanced Organic Synthesis: Serves as a sophisticated building block for synthesizing complex molecules in pharmaceutical and materials science research.

Basic Information

Product Name	3-[4-(Diethylamino)Phenyl]-3-(1-Ethyl-2-Methyl-1H-Indol-3-Yl)Phthalide
CAS No.	75805-17-3
Molecular Formula	C30H32N2O2
Molecular Weight	452.59 g/mol
Synonyms	3-(4-Diethylaminophenyl)-3-(1-ethyl-2-methylindol-3-yl)phthalide; 1-Ethyl-2-methyl-3-[3-(4-diethylaminophenyl)-3-phthalidyl]indole; 3-(4-Diethylaminophenyl)-3-(1-ethyl-2-methyl-1H-indol-3-yl)-1(3H)-isobenzofuranone; Thermochromic Leuco Dye Precursor; ODB-2 Precursor; CVL Derivative; Crystal Violet Lactone Analog; Phthalide-based Chromogen
EINECS	Contact for details

Quality Control

Our production of 3-[4-(Diethylamino)Phenyl]-3-(1-Ethyl-2-Methyl-1H-Indol-3-Yl)Phthalide adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, to verify identity, potency, and impurity profiles. Certificates of Analysis (COA) documenting all critical specifications 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, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents. The container should be kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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