Description

1,1,3-Trimethyl-3-Phenylindan-4',5-Dicarboxylic Acid is a high-purity, functionalized indan derivative that serves as a critical advanced intermediate in fine chemical synthesis. Its unique polycyclic structure with multiple functional groups makes it a valuable building block for creating complex molecules with specific properties. This compound is primarily sought by research and development laboratories and production facilities in the pharmaceutical, agrochemical, and specialty materials sectors for the development of novel active ingredients and performance chemicals.

Application

• Pharmaceutical Intermediate: A key synthon for the research and development of new drug candidates, particularly those targeting central nervous system (CNS) disorders or requiring rigid, lipophilic scaffolds.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its indan core can contribute to improved stability and bioactivity.
• Liquid Crystal & OLED Material Precursor: Serves as a starting material for synthesizing novel organic semiconductors, charge-transport materials, or liquid crystal compounds for display technologies.
• Polymer & Resin Modifier: The dicarboxylic acid functionality allows it to be incorporated into polymer chains as a monomer or cross-linker, potentially enhancing thermal or mechanical properties.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex polycyclic structures via reactions at the carboxylic acid groups or the aromatic rings.
• Dye & Pigment Intermediate: Utilized in the synthesis of specialized colorants and pigments that require a fused aromatic system for color fastness and specific hue properties.

Basic Information

Product Name	1,1,3-Trimethyl-3-Phenylindan-4',5-Dicarboxylic Acid
CAS No.	3569-18-4
Molecular Formula	C21H20O4
Molecular Weight	336.38 g/mol
Synonyms	4',5-Bis(carboxy)-1,1,3-trimethyl-3-phenylindane; 4',5-Indandicarboxylic acid, 1,1,3-trimethyl-3-phenyl-; 3-Phenyl-1,1,3-trimethylindane-4',5-dicarboxylic acid; NSC 334099; 1,1,3-Trimethyl-3-phenylindane-4',5-dicarboxylic acid; 3-Phenyl-1,1,3-trimethyl-4',5-indandicarboxylic acid
EINECS	Contact for details

Quality Control

Our production of 1,1,3-Trimethyl-3-Phenylindan-4',5-Dicarboxylic Acid adheres to stringent in-process controls and final batch testing to ensure consistent high quality and purity suitable for demanding R&D and scale-up applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles. We support compliance with REACH and other global regulatory frameworks, and specifications can be aligned with customer-specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which may affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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