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CAS 33171-05-0

CAS 33171-05-0 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 33171-05-0
CAS 33171-05-0PubChem CID 5315472

Bisdemethoxycurcumin

Bisdemethoxycurcumin is a beta-diketone that is methane in which two of the hydrogens are substituted by 4-hydroxycinnamoyl groups. It has a role as a metabolite and an EC 3.2.1.1 (alpha-amylase) inhibitor. It is a polyphenol, an enone, a beta-diketone and a diarylheptanoid. It is functionally related to a 4-coumaric acid. — ChEBI

IUPAC name
(1E,6E)-1,7-bis(4-hydroxyphenyl)hepta-1,6-diene-3,5-dione
Molecular formula
C19H16O4
Molecular weight
308.3 g/mol
Exact mass
308.10485899 Da
XLogP3
3.3
Topological polar surface area
74.6 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

Curcumin IIIDidemethoxycurcuminbisdesmethoxycurcuminBis-demethoxycurcuminBis(p-hydroxycinnamoyl)methane1,6-Heptadiene-3,5-dione, 1,7-bis(4-hydroxyphenyl)-2EFO1BP34RCHEBI:71045
16 more reported names
bisdemethoxy-curcuminRefChem:569455607-464-9BisdemethoxycucurminBis(4-hydroxycinnamoyl)methane(E,E)-BisdemethoxycurcuminC19H16O41,7-bis(4-hydroxyphenyl)hepta-1,6-diene-3,5-dione1,6-Heptadiene-3,5-dione, 1,7-bis(4-hydroxyphenyl)-, (1E,6E)-BHCMTdi-p-coumaroylmethaneBis-desmethoxycurcuminp,p'-DihydroxydicinnamoylmethaneUNII-2EFO1BP34RCurcumin III;DidemethoxycurcuminCurcuminoid A
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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 33171-05-0

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How CAS 33171-05-0 is used on this site

CAS 33171-05-0 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 33171-05-0 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.