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Atomfair 4-Mercaptobenzoic acid 4-MBA C7H6O2S CAS 1074-36-8

4-Mercaptobenzoic Acid (CAS No. 1074-36-8) is a high-purity aromatic thiol compound with the molecular formula C7H6O2S . This versatile reagent features both a carboxylic acid (–COOH) and a thiol (–SH) functional group on a benzene ring, making it invaluable for conjugation chemistry, surface modification, and material science applications. With a molecular weight of 154.19 g/mol, it is supplied as a white to off-white crystalline powder with ≥98% purity (HPLC). Ideal for researchers in organic synthesis, nanotechnology, and bioconjugation, this compound is rigorously tested for consistency and stability. Store under inert conditions at 2-8°C to prevent oxidation of the thiol group.

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Description

4-Mercaptobenzoic Acid (CAS No. 1074-36-8) is a high-purity aromatic thiol compound with the molecular formula C7H6O2S. This versatile reagent features both a carboxylic acid (–COOH) and a thiol (–SH) functional group on a benzene ring, making it invaluable for conjugation chemistry, surface modification, and material science applications. With a molecular weight of 154.19 g/mol, it is supplied as a white to off-white crystalline powder with ≥98% purity (HPLC). Ideal for researchers in organic synthesis, nanotechnology, and bioconjugation, this compound is rigorously tested for consistency and stability. Store under inert conditions at 2-8°C to prevent oxidation of the thiol group.

Properties

  • CAS Number: 1074-36-8
  • Complexity: 128
  • IUPAC Name: 4-sulfanylbenzoic acid
  • InChI: InChI=1S/C7H6O2S/c8-7(9)5-1-3-6(10)4-2-5/h1-4,10H,(H,8,9)
  • InChI Key: LMJXSOYPAOSIPZ-UHFFFAOYSA-N
  • Exact Mass: 154.00885060
  • Molecular Formula: C7H6O2S
  • Molecular Weight: 154.19
  • SMILES: C1=CC(=CC=C1C(=O)O)S
  • Topological: 38.3
  • Monoisotopic Mass: 154.00885060
  • Synonyms: 4-Mercaptobenzoic acid, 600-825-1, 1074-36-8, 4-Sulfanylbenzoic acid, Benzoic acid, 4-mercapto-, 4-Mercaptobenzoate, 4-Mercapto-benzoic acid, 4-Thiobenzoic acid, p-Mercaptobenzoic acid, MFCD00016617, 4-Mercapto benzoic acid, Benzoic acid, p-mercapto-, 4-mercaptobenzoic acid, technical grade, para-Mercaptobenzoate, 4-Mercaptobenzoicacid, 4-carboxythiophenol, paracarboxythiophenol, NSC 32022, 4-Carboxybenzenethiol, 4-Sulfanylbenzoic acid #, SCHEMBL40593, CHEMBL98938, 4-Mercaptobenzoic acid, 99%, 4-mercaptobenzenecarboxylic acid, SCHEMBL1203914, SCHEMBL18856223, LMJXSOYPAOSIPZ-UHFFFAOYSA-, DTXSID40148036, NSC32022, STR03027, NSC-32022, AKOS009106886, CS-W018038, FM15328, PS-4543, AC-15549, DB-040755, M1294, NS00123216, 4-Mercaptobenzoic acid, technical grade, 90%, EN300-26533, F2182-0142, Z223639246, InChI=1/C7H6O2S/c8-7(9)5-1-3-6(10)4-2-5/h1-4,10H,(H,8,9)

Application

4-Mercaptobenzoic acid is widely used as a linker molecule for gold nanoparticle (AuNP) functionalization due to its strong Au–S binding affinity. It serves as a precursor for self-assembled monolayers (SAMs) in biosensor development and surface-enhanced Raman spectroscopy (SERS). The compound is also employed in peptide synthesis and as a building block for pharmaceutical intermediates.

Safety and Hazards

GHS Hazard Statements

  • H315 (97.8%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (97.8%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H335 (95.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

  • P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

  • Skin Irrit. 2 (97.8%)
  • Eye Irrit. 2 (97.8%)
  • STOT SE 3 (95.6%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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