4-Mercaptophthalic acid structure

4-Mercaptophthalic acid

TL;DR: 4-Mercaptophthalic acid (CAS 82520-79-4) is a chemical compound with molecular formula C8H6O4S and molecular weight 198.00 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

4-sulfanylphthalic acid

Also Known As: 4-mercaptophthalic acid, 4-sulfanylphthalic Acid, 4-mercaptophthalicacid, 4-sulfanylbenzene-1,2-dicarboxylic acid, 1,2-Benzenedicarboxylic acid, 4-mercapto-

CAS: 82520-79-4
Molecular Formula C8H6O4S
Molecular Weight 198.00 g/mol
LogP 1.3717
Topological Polar Surface Area 74.6 Ų
Hydrogen Bond Donors 3
Hydrogen Bond Acceptors 3
Rotatable Bonds 2
Exact Mass 197.99867
Heavy Atoms 13
Complexity 372.40683

Chemical Identifiers

CAS Number 82520-79-4
SMILES C1=CC(=C(C=C1S)C(=O)O)C(=O)O

Product Overview

4-Mercaptophthalic acid (CAS 82520-79-4), with molecular formula C8H6O4S and molecular weight 198.00 g/mol. IUPAC: 4-sulfanylphthalic acid.

🧪
Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.
View MSDS →

Chemical Property Profile of 4-Mercaptophthalic acid

XLogP
1.3717
TPSA (Topological Polar Surface Area)
74.6
Hydrogen Bond Donors
3
Hydrogen Bond Acceptors
3
Rotatable Bonds
2
Heavy Atoms
13
Complexity
372.40683
Exact Mass
197.99867
Monoisotopic Mass
197.99867
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of 4-Mercaptophthalic acid

The XLogP value of 1.3717 suggests moderate lipophilicity, balancing water solubility and membrane permeability for 4-Mercaptophthalic acid. The TPSA of 74.6 Ų falls within the moderate polarity range, balancing permeability and solubility for 4-Mercaptophthalic acid. Following Lipinski's Rule of Five, 4-Mercaptophthalic acid has 3 hydrogen bond donor(s) and 3 hydrogen bond acceptor(s), all within the drug-like range, suggesting favorable oral bioavailability potential.

Frequently Asked Questions

What is the typical lead time for this product?
Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.
Can you provide samples for testing?
Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.
What documentation do you provide with the product?
We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
Do you ship internationally?
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location. Please contact us for specific shipping information.

Frequently Asked Questions

What is the CAS number of 4-Mercaptophthalic acid?

The CAS number of 4-Mercaptophthalic acid is 82520-79-4.

What is the molecular formula of 4-Mercaptophthalic acid?

The molecular formula of 4-Mercaptophthalic acid is C8H6O4S.

What is the molecular weight of 4-Mercaptophthalic acid?

The molecular weight of 4-Mercaptophthalic acid is 198.00 g/mol.

Where can I buy 4-Mercaptophthalic acid?

You can request a quote for 4-Mercaptophthalic acid directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for 4-Mercaptophthalic acid?

Yes, KEHONG BIO provides custom synthesis services for 4-Mercaptophthalic acid and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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