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CAS 2957-21-3/520-29-6

CAS 2957-21-3/520-29-6 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 2957-21-3
CAS 2957-21-3PubChem CID 73571

Sakuranetin

IUPAC name
(2S)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-2,3-dihydrochromen-4-one
Molecular formula
C16H14O5
Molecular weight
286.28 g/mol
Exact mass
286.08412354 Da
XLogP3
2.7
Topological polar surface area
76.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
1

Also known as

(2S)-sakuranetinNaringenin 7-methyl ether5,4'-Dihydroxy-7-methoxyflavanone(S)-(-)-4',5-dihydroxy-7-methoxyflavanone5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-chroman-4-one3O38P61299CHEBI:289274H-1-Benzopyran-4-one, 2,3-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-, (S)-
16 more reported names
(2S)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxychroman-4-oneRefChem:180866220-980-5(S)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxychroman-4-one4',5-Dihydroxy-7-methoxyflavanone7-O-Methylnaringenin4H-1-Benzopyran-4-one, 2,3-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-, (2S)-(2S)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-2,3-dihydro-4H-chromen-4-one(2S)-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-chroman-4-oneDihydrogenkwaninUNII-3O38P61299EINECS 220-980-5NSC 407228SAKURANETIN [MI]GTPL412Flavanone, 4',5-dihydroxy-7-methoxy-, (S)-(-)-
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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 520-29-6
CAS 520-29-6PubChem CID 348130

4'-5-Dihydroxy-7-methoxyflavanone, 7-O-Methylnaringenin, Naringenin 7-O-methyl ether

IUPAC name
5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-2,3-dihydrochromen-4-one
Molecular formula
C16H14O5
Molecular weight
286.28 g/mol
Exact mass
286.08412354 Da
XLogP3
2.7
Topological polar surface area
76.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

RefChem:505952112-126-45-hydroxy-2-(4-hydroxyphenyl)-7-methoxychroman-4-one(RS)-SakuranetinNSC-4072285-Hydroxy-2-(4-hydroxy-phenyl)-7-methoxy-chroman-4-one4H-1-Benzopyran-4-one,2,3-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-3,4-dihydro-2H-1-benzopyran-4-one
13 more reported names
4H-1-Benzopyran-4-one, 2,3-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-MEGxp0_0005575-Hydroxy-2-(4-hydroxyphenyl)-7-methoxy-2,3-dihydro-4H-chromen-4-one #ACon1_0000014H-1-Benzopyran-4-one,3-dihydro-5-hydroxy-2-(4-hydroxyphenyl)-7-methoxy-, (S)-HMS2271F135,4''-Dihydroxy-7-o-methoxyflavanoneAC-20247AC-34929CS-0066106Flavanone,5-dihydroxy-7-methoxy-, (S)-(-)-BRD-A32263173-001-01-25-Hydroxy-2-(4-hydroxyphenyl)-7-methoxy-2,3-dihydro-4H-1-benzopyran-4-one
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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 2957-21-3/520-29-6

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No records found for this CAS number.

How CAS 2957-21-3/520-29-6 is used on this site

CAS 2957-21-3/520-29-6 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 2957-21-3/520-29-6 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.