Description

Benzoic Acid, 5-Hydroxy-2-Mercapto- is a multifunctional aromatic compound featuring both phenolic and thiol groups, making it a valuable intermediate for advanced chemical synthesis. This compound is critical for researchers and manufacturers requiring a building block with dual reactivity for creating complex molecules. It is primarily utilized in the development of pharmaceuticals, agrochemicals, and specialty polymers where precise molecular modification is essential. The CAS number for this specific isomer is 384339-80-4.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring thioether or disulfide linkages.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and plant growth regulators.
• Polymer Modification: Acts as a chain transfer agent or functional monomer to introduce thiol or phenolic groups into polymer backbones, enhancing properties like adhesion or cross-linking capability.
• Biochemical Research: Employed as a probe or building block in peptide mimetics and enzyme inhibitor studies due to its reactive thiol moiety.
• Chelating Agent Precursor: Utilized in the manufacture of ligands for metal complexation in catalytic or analytical applications.
• Fine Chemical Synthesis: A versatile starting material for synthesizing dyes, flavors, and other high-value specialty chemicals.

Basic Information

Product Name	Benzoic Acid, 5-Hydroxy-2-Mercapto-
CAS No.	384339-80-4
Molecular Formula	C7H6O3S
Molecular Weight	170.19 g/mol
Synonyms	5-Hydroxy-2-mercaptobenzoic acid; 2-Mercapto-5-hydroxybenzoic acid; Thiosalicylic acid, 5-hydroxy-; 5-Hydroxythiosalicylic acid; 2-Sulfanyl-5-hydroxybenzoic acid; 5-Hydroxy-2-sulfanylbenzoic acid; 2-Mercapto-5-hydroxybenzoic acid
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 5-Hydroxy-2-Mercapto- is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing specifications such as assay, related substances, and residual solvents. Our quality commitment supports applications in regulated industries, and we can tailor purity grades to meet specific project requirements, from research to commercial scale.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its properties of being easily oxidized (store under inert atmosphere) and being light-sensitive, it is recommended to handle under an inert atmosphere such as nitrogen or argon for long-term storage and to minimize exposure to air and light during use.

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%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Single Unknown Impurity	≤ 0.5%

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