Description

3-Mercaptobenzoic Acid is a versatile aromatic thiol compound that serves as a critical building block in organic synthesis. Its unique structure, featuring both a carboxylic acid and a thiol group, makes it a valuable intermediate for creating complex molecules with tailored properties. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those requiring thioether or disulfide linkages.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the benzoic acid-thiol scaffold imparts specific biological activity.
• Polymer & Material Science: Acts as a chain transfer agent or functional monomer in polymerization reactions, and as a surface modifier or cross-linking agent for advanced materials.
• Chemical Research & Development: A valuable reagent for constructing heterocyclic compounds, metal-organic frameworks (MOFs), and ligands for catalysis.
• Peptide & Protein Modification: Utilized for site-specific conjugation or labeling of biomolecules via its reactive thiol group.

Basic Information

Product Name	3-Mercaptobenzoic Acid
CAS No.	4869-59-4
Molecular Formula	C7H6O2S
Molecular Weight	154.19 g/mol
Synonyms	3-Thiosalicylic Acid; m-Mercaptobenzoic Acid; Benzoic acid, 3-mercapto-; 3-Carboxythiophenol; 3-Sulfanylbenzoic acid; m-Carboxythiophenol; 3-MBA
EINECS	225-512-3

Quality Control

Our 3-Mercaptobenzoic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and impurity profiles. We adhere to relevant industry guidelines to ensure consistent quality and reliable supply for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	162 - 167 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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