Description

2-Benzenedicarboxylic Acid, 5-Hydroxy-3-Methyl-1 is a functionalized aromatic dicarboxylic acid derivative, serving as a versatile intermediate in advanced organic synthesis. Its molecular structure, featuring both carboxylic acid and phenolic hydroxyl groups, makes it a valuable building block for creating complex molecules with tailored properties. This compound is primarily sought by industries involved in the production of specialty polymers, pharmaceutical active ingredients, and high-performance dyes or pigments.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a substituted phthalic acid backbone.
• Polymer & Resin Modifier: Used to introduce carboxyl and hydroxyl functionality into polyester resins, alkyd resins, and other polymers to modify solubility, adhesion, and cross-linking density.
• Dye & Pigment Synthesis: Serves as a starting material for manufacturing complex organic colorants, including azo dyes and pigment dispersants.
• Coordination Chemistry & Ligand: Acts as a chelating ligand for metal ions in catalytic systems or for the preparation of metal-organic frameworks (MOFs).
• Fine Chemical Synthesis: Employed in research and development for creating novel compounds in agrochemicals, flavors, and fragrances.
• Analytical Reagent: Potentially used as a standard or reagent in analytical chemistry methodologies.

Basic Information

Product Name	2-Benzenedicarboxylic Acid, 5-Hydroxy-3-Methyl-1
CAS No.	4821-92-5
Molecular Formula	C9H8O5
Molecular Weight	196.16 g/mol
Synonyms	5-Hydroxy-3-methylphthalic acid; 3-Methyl-5-hydroxyphthalic acid; 1,2-Benzenedicarboxylic acid, 5-hydroxy-3-methyl-; 5-Hydroxy-3-methylbenzene-1,2-dicarboxylic acid
EINECS	Contact for details

Quality Control

Our production of 2-Benzenedicarboxylic Acid, 5-Hydroxy-3-Methyl-1 adheres to stringent quality management protocols. Every batch is analyzed using advanced techniques like HPLC and NMR to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all critical parameters are provided and can be tailored to meet specific customer or regulatory requirements.

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). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
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.