Description

5-Hydroxy-3-Mercapto-4-Methoxybenzoic Acid is a multifunctional aromatic compound featuring phenolic, thiol, and carboxylic acid groups, making it a versatile building block for advanced synthesis. This unique structure is critical for developing complex molecules where precise functional group manipulation is required. It is primarily sought after by research institutions and manufacturers in the pharmaceutical and fine chemical sectors for applications in drug discovery, material science, and as a key intermediate in organic synthesis.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific receptor sites.
• Ligand Synthesis: Used in the development of chelating agents and ligands for catalysis and metal ion binding applications.
• Polymer Modification: Acts as a functional monomer or cross-linking agent to introduce thiol and carboxylic acid functionalities into polymer chains.
• Bioconjugation Chemistry: The thiol (-SH) group enables its use in creating stable thioether linkages for protein and peptide conjugation.
• Research & Development: A valuable tool compound in academic and industrial R&D for exploring new synthetic pathways and chemical biology.
• Fine Chemical Synthesis: Employed in the multi-step synthesis of complex organic molecules, dyes, and specialty chemicals.

Basic Information

Product Name	5-Hydroxy-3-Mercapto-4-Methoxybenzoic Acid
CAS No.	80547-87-1
Molecular Formula	C9H10O5S
Molecular Weight	230.24 g/mol
Synonyms	4-Methoxy-5-hydroxy-3-mercaptobenzoic acid; 3-Mercapto-5-hydroxy-4-methoxybenzoic acid; Benzoic acid, 5-hydroxy-3-mercapto-4-methoxy-; 5-Hydroxy-4-methoxy-3-mercaptobenzoic acid; 3-Thiol-5-hydroxy-4-methoxybenzoic acid
EINECS	Contact for details

Quality Control

Our 5-Hydroxy-3-Mercapto-4-Methoxybenzoic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial use. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, prolonged exposure to air and moisture should be avoided. For long-term storage, consider using an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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