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InventoryRef 9420202/06/2016

ISOBAVACHALCONE

Corylifolinin,2-Propen-1-one, 1-[2,4-dihydroxy-3-(3-methyl-2-butenyl)phenyl]-3-(4-hydroxyphenyl)-, (2E)-

ISOBAVACHALCONE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

Chemical identity and properties

PubChem 2D chemical structure for CAS 20784-50-3
CAS 20784-50-3PubChem CID 5281255

Isobavachalcone

Isobavachalcone is a member of the class of chalcones that is trans-chalcone substituted by hydroxy groups at positions 4, 2' and 4' and a prenyl group at position 3'. It has a role as a metabolite, an antibacterial agent and a platelet aggregation inhibitor. It is a member of chalcones and a polyphenol. It is functionally related to a trans-chalcone. — ChEBI

IUPAC name
(E)-1-[2,4-dihydroxy-3-(3-methylbut-2-enyl)phenyl]-3-(4-hydroxyphenyl)prop-2-en-1-one
Molecular formula
C20H20O4
Molecular weight
324.4 g/mol
Exact mass
324.13615911 Da
XLogP3
5.1
Topological polar surface area
77.8 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
4
Covalent units
1
Defined stereocentres
0

Also known as

CorylifolininIsobacachalconeZWO2SC993A2',4,4'-Trihydroxy-3'-(3-methyl-2-butenyl)chalconeCHEBI:28106(E)-1-(2,4-dihydroxy-3-(3-methylbut-2-enyl)phenyl)-3-(4-hydroxyphenyl)prop-2-en-1-oneRefChem:406874-Hydroxyisocordoin
16 more reported names
(E)-1-(2,4-dihydroxy-3-(3-methylbut-2-en-1-yl)phenyl)-3-(4-hydroxyphenyl)prop-2-en-1-oneCorylifolinin;Isobacachalcone(2E)-1-[2,4-dihydroxy-3-(3-methylbut-2-en-1-yl)phenyl]-3-(4-hydroxyphenyl)prop-2-en-1-one(E)-1-[2,4-Dihydroxy-3-(3-methyl-2-butenyl)phenyl]-3-(4-hydroxyphenyl)-2-propen-1-one2-Propen-1-one, 1-[2,4-dihydroxy-3-(3-methyl-2-buten-1-yl)phenyl]-3-(4-hydroxyphenyl)-, (2E)-1-(2,4-Dihydroxy-3-(3-methylbut-2-en-1-yl)phenyl)-3-(4-hydroxyphenyl)prop-2-en-1-one4-Hydroxyisocordoim2-PROPEN-1-ONE, 1-(2,4-DIHYDROXY-3-(3-METHYL-2-BUTEN-1-YL)PHENYL)-3-(4-HYDROXYPHENYL)-, (2E)-2-PROPEN-1-ONE, 1-(2,4-DIHYDROXY-3-(3-METHYL-2-BUTENYL)PHENYL)-3-(4-HYDROXYPHENYL)-, (2E)-2-Propen-1-one, 1-[2,4-dihydroxy-3-(3-methyl-2-butenyl)phenyl]-3-(4-hydroxyphenyl)-, (2E)-Isobavachalcone [M+H]+Isobavachalcone (Standard)UNII-ZWO2SC993ACorylifolinin(Isobavachalcone)?DUWPGRAKHMEPCM-IZZDOVSWSA-NGLXC-04509
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.

Inventory details for ISOBAVACHALCONE

INCI name

ISOBAVACHALCONE

Description

Corylifolinin,2-Propen-1-one, 1-[2,4-dihydroxy-3-(3-methyl-2-butenyl)phenyl]-3-(4-hydroxyphenyl)-, (2E)-

Record provenance

Inventory reference
94202
Imported identity
ISOBAVACHALCONE
Source update
02/06/2016
European Commission CosIng source notes

Key data

EC
—
Restriction
—
Function
SKIN CONDITIONING
Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How ISOBAVACHALCONE appears in the CosIng inventory

The CosIng inventory lists ISOBAVACHALCONE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

ISOBAVACHALCONE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

ISOBAVACHALCONE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, ISOBAVACHALCONE carries the following function designation(s):

CAS 20784-50-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for ISOBAVACHALCONE

This page reproduces the CosIng inventory entry for ISOBAVACHALCONE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research ISOBAVACHALCONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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