4-Mercaptobenzoic acid(4-MBA) - ≥99% , CAS No.1074-36-8

CAS: 1074-36-8 Cat. No.: M431355 Formula: C7H6O2S Molecular Weight: 154.19 EC Number: 600-825-1
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
4-Carboxythiophenol
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
★
Size
USA
Germany (EU)*
Price
Qty
1g
M431355-1g
9 In stock
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$74.90

$87.90
Save $13.00 (14.79%)
5g
M431355-5g
5 In stock
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$237.90

$309.90
Save $72.00 (23.23%)
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 278 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

4-mercaptobenzoic acid (4-MBA) is a probe molecule with thiol and carboxylic groups that form a self-assembled monolayers (SAMs) which can be used for the development of surface enhanced raman spectroscopy (SERS) sensors.


Application

Gold nanostructures functionalized with 4-Mercaptobenzoic acid (4-MBA) may exhibit improve catalytic activity. Several studies report 4-MBA as a model analyte for surface enhancement Raman scattering (SERS) substrates.

Specifications

Synonyms
4-Carboxythiophenol
Specifications & Purity
≥99%
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Pubchem Sid488186937
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488186937
Canonical SmilesC1=CC(=CC=C1C(=O)O)S
IUPAC Name4-sulfanylbenzoic acid
InChIKeyLMJXSOYPAOSIPZ-UHFFFAOYSA-N
INCHI1S/C7H6O2S/c8-7(9)5-1-3-6(10)4-2-5/h1-4,10H,(H,8,9)
Isomeric SMILES C1=CC(=CC=C1C(=O)O)S
WGK Germany 3
Molecular Weight 154.19
Reaxy-Rn 2206015
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=2206015&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassBenzene and substituted derivatives
SubclassBenzoic acids and derivatives
Intermediate Tree Nodes Sulfanylbenzoic acids and derivatives - P-sulfanylbenzoic acids and derivatives
Direct ParentP-sulfanylbenzoic acids
Alternative Parents Benzoic acids  Thiophenols  Benzoyl derivatives  Monocarboxylic acids and derivatives  Carboxylic acids  Thiols  Organooxygen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic homomonocyclic compounds
Substituents P-sulfanylbenzoic acid - Benzoic acid - Thiophenol - Benzoyl - Arylthiol - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Aromatic homomonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as p-sulfanylbenzoic acids. These are benzoic acids which bear a sulfanyl group (R-SH) attached to the benzene ring at positions 1 and 4, respectively.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

18 results found

Lot NumberCertificate TypeDateItem
L2504371Certificate of AnalysisNov 21, 2025 M431355
L2504370Certificate of AnalysisNov 21, 2025 M431355
E2514406Certificate of AnalysisApr 17, 2025 M431355
E2514405Certificate of AnalysisApr 17, 2025 M431355
A2515383Certificate of AnalysisDec 03, 2024 M431355
A2515382Certificate of AnalysisDec 03, 2024 M431355
G2411351Certificate of AnalysisJun 25, 2024 M431355
G2411352Certificate of AnalysisJun 25, 2024 M431355
A2416610Certificate of AnalysisDec 18, 2023 M431355
A2416612Certificate of AnalysisDec 18, 2023 M431355
G2329709Certificate of AnalysisJul 14, 2023 M431355
G2329715Certificate of AnalysisJul 14, 2023 M431355
G2329725Certificate of AnalysisJul 14, 2023 M431355
G2329733Certificate of AnalysisJul 14, 2023 M431355
D2319889Certificate of AnalysisMar 27, 2023 M431355
D2319890Certificate of AnalysisMar 27, 2023 M431355
D2319893Certificate of AnalysisMar 27, 2023 M431355
D2319894Certificate of AnalysisMar 27, 2023 M431355
Chemical and Physical Properties
SolubilitySoluble in ether, alcohol
Sensitivityair sensitive
Melt Point(°C)215-224°C
Molecular Weight154.190 g/mol
XLogP32.300
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count1
Exact Mass154.009 Da
Monoisotopic Mass154.009 Da
Topological Polar Surface Area38.300 Ų
Heavy Atom Count10
Formal Charge0
Complexity128.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
Solution Calculators
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