Description

2,5-Di(p-Toluidino)-3,6-Dihydroterephthalic Acid Diethyl Ester is a specialized organic intermediate characterized by its unique dihydroterephthalate core substituted with toluidino groups. This compound matters for its role as a key precursor in the synthesis of advanced functional dyes, pigments, and optical materials. It is primarily needed by manufacturers in the high-performance pigments, liquid crystal display (LCD) materials, and specialty chemical synthesis sectors seeking to develop products with specific chromophoric and electronic properties.

Application

• Key intermediate for the synthesis of high-performance pigments and dyes, particularly for automotive and industrial coatings.
• Precursor in the production of functional organic materials for optoelectronic applications, including LCDs.
• Building block for advanced chemical research and development of novel chromophores.
• Used in the manufacture of specialty polymers and additives requiring specific light-absorption characteristics.
• Intermediate for photographic chemicals and sensitizers.
• Starting material in pharmaceutical research for the synthesis of complex molecular architectures.

Basic Information

Product Name	2,5-Di(p-Toluidino)-3,6-Dihydroterephthalic Acid Diethyl Ester
CAS No.	4898-57-1
Molecular Formula	C28H30N2O4
Molecular Weight	458.55 g/mol
Synonyms	2,5-Bis(4-methylanilino)-3,6-dihydroterephthalic acid diethyl ester; Diethyl 2,5-bis[(4-methylphenyl)amino]-3,6-dihydro-1,4-benzenedicarboxylate; 2,5-Di(4-toluidino)-3,6-dihydroterephthalic acid diethyl ester; 1,4-Benzenedicarboxylic acid, 2,5-bis[(4-methylphenyl)amino]-3,6-dihydro-, diethyl ester; 2,5-Di-p-toluidino-3,6-dihydroterephthalic acid diethyl ester; Dihydroterephthalate derivative TDAE; CAS 4898-57-1
EINECS	Contact for details

Quality Control

Our 2,5-Di(p-Toluidino)-3,6-Dihydroterephthalic Acid Diethyl Ester is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance for sensitive synthesis applications. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request 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 light-sensitive and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Yellow to orange 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.