3-(Methylthio)propionic Acid - ≥98%(GC)(T) , CAS No.646-01-5

CAS: 646-01-5 Cat. No.: M158072 Molecular Weight: 120.17 EC Number: 211-460-9
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(GC)(T)
Synonyms
3-methylsulfanylpropionic acid | 3-Methylsulfanyl-Propionic Acid | D87669 | SCHEMBL342851 | 3-(METHYLMERCAPTO)PROPANOIC ACID | 3-(Methylmercapto)propionic Acid | 3-methylsulfanylpropanoic acid | 3-METHYLTHIOPROPIONA | 3-methylthiopropionate | 3(methylthio
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
M158072-1g
5
$9.90
5g
M158072-5g
3
$10.90
25g
M158072-25g
2

$12.90

$19.90
Save $7.00 (35.18%)
50g
M158072-50g
4

$23.90

$35.90
Save $12.00 (33.43%)
100g
M158072-100g
2

$41.90

$62.90
Save $21.00 (33.39%)
500g
M158072-500g
1

$156.90

$235.90
Save $79.00 (33.49%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥98%(GC)(T) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
3-methylsulfanylpropionic acid | 3-Methylsulfanyl-Propionic Acid | D87669 | SCHEMBL342851 | 3-(METHYLMERCAPTO)PROPANOIC ACID | 3-(Methylmercapto)propionic Acid | 3-methylsulfanylpropanoic acid | 3-METHYLTHIOPROPIONA | 3-methylthiopropionate | 3(methylthio
Specifications & Purity
≥98%(GC)(T)
Storage
Room temperature
Shipped In
Normal
Action Type
INHIBITOR
Purity
≥98%(GC)(T)
Names and Identifiers
Pubchem Sid488179529
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488179529
Canonical SmilesCSCCC(=O)O
IUPAC Name3-methylsulfanylpropanoic acid
InChIKeyCAOMCZAIALVUPA-UHFFFAOYSA-N
INCHI1S/C4H8O2S/c1-7-3-2-4(5)6/h2-3H2,1H3,(H,5,6)
Isomeric SMILES CSCCC(=O)O
Molecular Weight 120.17
Reaxy-Rn 1743054
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1743054&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
SuperclassLipids and lipid-like molecules
ClassFatty Acyls
SubclassFatty acids and conjugates
Intermediate Tree Nodes Not available
Direct ParentStraight chain fatty acids
Alternative Parents Sulfenyl compounds  Monocarboxylic acids and derivatives  Dialkylthioethers  Carboxylic acids  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Straight chain fatty acid - Dialkylthioether - Sulfenyl compound - Thioether - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Carbonyl group - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as straight chain fatty acids. These are fatty acids with a straight aliphatic chain.
External Descriptors Thia fatty acids
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.

9 results found

Lot NumberCertificate TypeDateItem
E2211053Certificate of AnalysisFeb 04, 2026 M158072
E2211056Certificate of AnalysisFeb 04, 2026 M158072
E2211057Certificate of AnalysisFeb 04, 2026 M158072
E2211058Certificate of AnalysisFeb 04, 2026 M158072
E2211059Certificate of AnalysisFeb 04, 2026 M158072
E2211060Certificate of AnalysisFeb 04, 2026 M158072
K1904099Certificate of AnalysisAug 08, 2023 M158072
F2520080Certificate of AnalysisMar 10, 2022 M158072
F2520085Certificate of AnalysisMar 10, 2022 M158072
Chemical and Physical Properties
Refractive Index1.4870 to 1.4910
Flash Point(°F)104°C
Flash Point(°C)104°C
Boil Point(°C)130°C/15mmHg
Melt Point(°C)ca16°
Molecular Weight120.170 g/mol
XLogP30.400
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass120.025 Da
Monoisotopic Mass120.025 Da
Topological Polar Surface Area62.600 Ų
Heavy Atom Count7
Formal Charge0
Complexity62.700
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
Citations of This Product
References
1. Hongling Fang, Yi Li, Songwei Zhang, Qi Ding, Litian Hu.  (2022)  Novel binary oil-soluble ionic liquids with high lubricating performance.  TRIBOLOGY INTERNATIONAL,      [PMID:] [10.1016/j.triboint.2022.107724]
Solution Calculators
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