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CAS 79-42-5

CAS 79-42-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 79-42-5
CAS 79-42-5PubChem CID 62326

(+-)-2-Mercaptopropionic acid

2-mercaptopropanoic acid is a mercaptopropanoic acid. — ChEBI

IUPAC name
2-sulfanylpropanoic acid
Molecular formula
C3H6O2S
Molecular weight
106.15 g/mol
Exact mass
106.00885060 Da
XLogP3
0.5
Topological polar surface area
38.3 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

2-Mercaptopropionic acidThiolactic acid2-Mercaptopropanoic acid2-Thiolactic acidalpha-Mercaptopropionic acidPROPANOIC ACID, 2-MERCAPTO-Propionic acid, 2-mercapto-O5U6967KGF
16 more reported names
CHEBI:47872RefChem:897821201-206-52-Thiolpropionic acidalpha-Mercaptopropanoic acidTiopronin Impurity B2-mercapto-propionic acidFEMA No. 3180Tiopronin Impurity 4EINECS 201-206-52-mercapto propionic acidUN2936BRN 0506218UNII-O5U6967KGFThiolactic acid [UN2936] [Poison]mercapto-propionic acid
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 79-42-5

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No records found for this CAS number.

How CAS 79-42-5 is used on this site

CAS 79-42-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 79-42-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.