Description

3-(1,2-Dimethyl-3-Indolyl)-3-[4-(Diethylamino)-2-Methylphenyl]Phthalide is a specialized organic compound belonging to the phthalide class, known for its unique chromogenic and fluorogenic properties. This compound is valued for its role as a key functional material in advanced imaging and detection technologies. It is primarily sought by manufacturers and R&D laboratories in the thermochromic, photochromic, and pressure-sensitive dye industries, as well as for use in analytical chemistry as a sensitive reagent.

Application

• Thermochromic Inks and Pigments: A key leuco dye precursor used in the formulation of temperature-sensitive color-changing inks for packaging, novelty items, and security printing.
• Pressure-Sensitive Recording Papers: Serves as a core color-forming component in carbonless copy paper and fax paper systems.
• Photochromic Materials: Used in research and development of light-sensitive lenses, optical data storage, and smart window films.
• Chemical Sensing and Biosensing: Employed as a fluorogenic or chromogenic probe in the development of sensors for detecting specific ions or biological molecules.
• Advanced Functional Materials: A critical intermediate in synthesizing complex organic molecules for optoelectronic applications and nonlinear optical materials.
• Analytical Reagent: Utilized in laboratory settings as a sensitive reagent for specific colorimetric assays and detection methods.

Basic Information

Product Name	3-(1,2-Dimethyl-3-Indolyl)-3-[4-(Diethylamino)-2-Methylphenyl]Phthalide
CAS No.	36499-49-7
Molecular Formula	C29H30N2O2
Molecular Weight	438.56 g/mol
Synonyms	3-(1,2-Dimethyl-1H-indol-3-yl)-3-[4-(diethylamino)-2-methylphenyl]-1(3H)-isobenzofuranone; 3-(1,2-Dimethylindol-3-yl)-3-(4-diethylamino-2-methylphenyl)phthalide; 3,3-Bis(1,2-dimethyl-3-indolyl)phthalide derivative; ODB-2 Precursor; Leuco Dye Precursor 36499-49-7; Thermochromic Dye Intermediate; Pressure-Sensitive Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of 3-(1,2-Dimethyl-3-Indolyl)-3-[4-(Diethylamino)-2-Methylphenyl]Phthalide adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, GC, and NMR to confirm identity and purity. Certificates of Analysis (COA) detailing all 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 room temperature (15-25°C). This material is light-sensitive and should be handled under appropriate conditions to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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