Description

9,9-Dimethyl-9H-Fluorene-2,7-Dicarboxylic Acid is a high-purity, functionalized fluorene derivative serving as a critical building block in advanced material synthesis. Its value lies in its rigid, planar structure and dual carboxylic acid functional groups, which enable precise molecular engineering and polymerization. This compound is essential for researchers and manufacturers in the organic electronics, polymer science, and pharmaceutical intermediates sectors, where it is used to create materials with tailored optoelectronic and mechanical properties. CAS No. 690272-91-4.

Application

• Organic Light-Emitting Diode (OLED) Materials: A key precursor for synthesizing electron-transport layers (ETLs) and host materials in display and lighting technologies.
• High-Performance Polymers: Serves as a monomer for producing polyimides, polyamides, and other engineering plastics with excellent thermal stability and mechanical strength.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules, particularly those requiring a rigid, lipophilic fluorene core structure.
• Liquid Crystal Materials: Incorporated into the design of liquid crystal compounds for displays and optical devices due to its planar geometry.
• Metal-Organic Frameworks (MOFs): Acts as an organic linker for constructing porous coordination polymers with potential applications in gas storage and catalysis.
• Photoactive Materials: Utilized in the development of dyes, sensors, and photoinitiators where its conjugated system is beneficial.
• Crosslinking Agent: Functions as a crosslinker in epoxy resins and other thermoset polymers to enhance network density and performance.
• Academic & Industrial R&D: A valuable reagent for exploring new synthetic pathways and material properties in chemical research.

Basic Information

Product Name	9,9-Dimethyl-9H-Fluorene-2,7-Dicarboxylic Acid
CAS No.	690272-91-4
Molecular Formula	C17H14O4
Molecular Weight	282.29 g/mol
Synonyms	2,7-Fluorenedicarboxylic acid, 9,9-dimethyl-; 9,9-Dimethylfluorene-2,7-dicarboxylic acid; 9H-Fluorene-2,7-dicarboxylic acid, 9,9-dimethyl-; 9,9-Dimethyl-9H-fluorene-2,7-dicarboxylic acid; 2,7-Bis(carboxy)-9,9-dimethylfluorene; DMFL-DA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 9,9-Dimethyl-9H-Fluorene-2,7-Dicarboxylic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and FTIR, to ensure high purity and batch-to-batch consistency suitable for demanding R&D and production applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent degradation from atmospheric moisture. Keep away from strong acids and organic solvents.

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%
Heavy Metals	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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