Description

4-Hydroxy-3-Methylbenzoic Acid is a versatile aromatic carboxylic acid derivative that serves as a critical building block in advanced organic synthesis. Its unique substitution pattern makes it a valuable intermediate for creating compounds with specific functional properties. This product is essential for research and development chemists, pharmaceutical manufacturers, and agrochemical producers seeking to develop new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for non-steroidal anti-inflammatory drugs (NSAIDs) and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its phenolic and carboxylic acid functionalities.
• Dye and Pigment Manufacturing: Serves as a starting material for azo dyes and other complex colorants due to its reactive sites for diazotization and coupling.
• Liquid Crystal & Polymer Chemistry: Acts as a monomer or modifying agent in the synthesis of specialty polymers and liquid crystal materials for electronic displays.
• UV Stabilizer & Antioxidant Precursor: Utilized in the development of additives for plastics, coatings, and cosmetics to enhance product stability and longevity.
• Research & Development: A fundamental reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways in medicinal and material chemistry.

Basic Information

Product Name	4-Hydroxy-3-Methylbenzoic Acid
CAS No.	499-76-3
Molecular Formula	C8H8O3
Molecular Weight	152.15 g/mol
Synonyms	3-Methyl-4-hydroxybenzoic acid; 4-Hydroxy-m-toluic acid; 3-Methylsalicylic acid; 2-Hydroxy-5-methylbenzoic acid; 5-Methylsalicylic acid; m-Cresotic acid; 3-Methyl-4-hydroxybenzoic acid; 499-76-3
EINECS	207-882-7

Quality Control

Our 4-Hydroxy-3-Methylbenzoic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all test results are provided with every shipment.

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). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	178°C - 182°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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