Description

5,5'-[(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methylene]Bis[2-Hydroxy-3-Methylbenzoic Acid] is a complex organic compound with a quinone methide structure, serving as a key intermediate in the synthesis of specialized dyes, pigments, and functional materials. Its precise molecular architecture makes it valuable for applications requiring specific chromophoric properties or as a building block for advanced polymers. This chemical is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and high-performance material sectors.

Application

• Dye and Pigment Intermediate: A critical precursor in the synthesis of specialized quinone-based dyes and organic pigments.
• Pharmaceutical Research: Used as a building block or intermediate in the development of novel active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Serves as a key component in creating advanced crop protection agents and herbicides.
• Functional Material Development: Employed in research for organic semiconductors, photoresists, and other advanced electronic materials.
• Analytical Chemistry: May be used as a standard or reagent in chromatographic analysis and method development.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for synthesizing polymers with specific optical or thermal properties.

Basic Information

Item	Details
Product Name	5,5'-[(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methylene]Bis[2-Hydroxy-3-Methylbenzoic Acid]
CAS No.	2947-64-0
Molecular Formula	C26H20O9
Molecular Weight	476.43 g/mol
Synonyms	5,5'-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)methylene]bis(2-hydroxy-3-methylbenzoic acid); 2,2'-(1E)-2-[3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene]ethylidene]bis(6-methylbenzoic acid); Quinone methide derivative; Bis(hydroxymethylbenzoic acid) quinone; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of 5,5'-[(3-Carboxy-5-Methyl-4-Oxo-2,5-Cyclohexadien-1-Ylidene)Methylene]Bis[2-Hydroxy-3-Methylbenzoic Acid] adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC and NMR to verify identity and assay. Certificates of Analysis (COA) documenting all critical parameters are available upon request. We support compliance with REACH and other global regulatory frameworks as required.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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