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CAS 503-66-2

CAS 503-66-2 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 503-66-2
CAS 503-66-2PubChem CID 68152

3-Hydroxypropionic acid

3-hydroxypropionic acid is a 3-hydroxy monocarboxylic acid that is propionic acid in which one of the hydrogens attached to the terminal carbon is replaced by a hydroxy group. It has a role as an Escherichia coli metabolite and a human metabolite. It is an omega-hydroxy-short-chain fatty acid and a 3-hydroxy monocarboxylic acid. It is functionally related to a propionic acid. It is a conjugate acid of a 3-hydroxypropionate. — ChEBI

IUPAC name
3-hydroxypropanoic acid
Molecular formula
C3H6O3
Molecular weight
90.08 g/mol
Exact mass
90.031694049 Da
XLogP3
-1.0
Topological polar surface area
57.5 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
3
Covalent units
1
Defined stereocentres
0

Also known as

Hydracrylic acidbeta-Hydroxypropionic acidhydroxypropionic acidEthylene lactic acidbeta-Lactic acid3-HydroxypropanoateC4ZF6XLD2Xbeta-hydroxypropionate
16 more reported names
CHEBI:33404RefChem:94392207-974-8Propanoic acid, 3-hydroxy-3-HYDROXY-PROPANOIC ACIDEthylenelacticacidGlyceric acid, 2-deoxy-b-HydroxypropionatePropionic acid, 3-hydroxy-3-Hydroxypropionic Acid (contains varying amounts of 3,3-Oxydipropionic Acid)b-Hydroxypropionic acid3-Hydroxypropionic acid, 30% in water.beta.-Hydroxypropionic acid3-Hydroxypropanoic acid30% in waterEthylenelactic acidFamotidine Impurity 13
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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 503-66-2

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How CAS 503-66-2 is used on this site

CAS 503-66-2 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 503-66-2 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.