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CAS 490-46-0/ 17334-50-8

CAS 490-46-0/ 17334-50-8 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 17334-50-8
CAS 17334-50-8PubChem CID 1203

2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol

Catechin is members of the class of hydroxyflavan that have a flavan-3-ol skeleton and its substituted derivatives. — ChEBI

IUPAC name
2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
Molecular formula
C15H14O6
Molecular weight
290.27 g/mol
Exact mass
290.07903816 Da
XLogP3
0.4
Topological polar surface area
110.0 Ų
Hydrogen-bond donors
5
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

RefChem:1060982236-471-62-(3,4-Dihydroxyphenyl)chroman-3,5,7-triol7295-85-4(+/-)-Catechin(+/-)-Epicatechin2-(3,4-Dihydroxyphenyl)chromane-3,5,7-triolcis-(+/-)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
16 more reported names
2H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-,(2R,3S)-rel-(+/-)-catecholCatechin (hydrate)3,3',4',5,7-Pentahydroxy-flavane( inverted exclamation markA)-CatechinEpicatechol, (-)-s3974( inverted exclamation markA)-Catechin hydrateEpicatechin (Epicatechol; Acacatechin; Kakaol)catechinsprotocatechinEpicatechin/ECNSC 81161s4723(-)epicatechin(+)-3,3',4',5,7-Flavanpentol
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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.

PubChem 2D chemical structure for CAS 490-46-0
CAS 490-46-0PubChem CID 72276

Epicatechin

IUPAC name
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
Molecular formula
C15H14O6
Molecular weight
290.27 g/mol
Exact mass
290.07903816 Da
XLogP3
0.4
Topological polar surface area
110.0 Ų
Hydrogen-bond donors
5
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
2

Also known as

(-)-EpicatechinL-EpicatechinEpicatecholepi-Catechinepi-Catecholl-Acacatechin(-)-Epicatechol(2R,3R)-(-)-Epicatechin
16 more reported names
(-)-epi catechin(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol34PHS7TU43(-)-(2R:3R)-5,7,3',4'-Tetrahydroxyflavan-3-olNSC-81161CHEBI:902H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R,3R)-2H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R-cis)-RefChem:7343(2R,3R)-2-(3,4-Dihydroxyphenyl)-3,5,7-chromanetriol(2R-cis)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-2H-1-benzopyran-3,5,7-triol207-710-1(2R,3R)-2-(3,4-Dihydroxyphenyl)chroman-3,5,7-triolC15H14O6CCRIS 7097.alpha. Catechin
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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 490-46-0/ 17334-50-8

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How CAS 490-46-0/ 17334-50-8 is used on this site

CAS 490-46-0/ 17334-50-8 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 490-46-0/ 17334-50-8 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.