Is BIORESMETHRIN safe to use in EU cosmetics?

BIORESMETHRIN is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 28434-01-7?

CAS 28434-01-7 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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

InventoryRef 9261521/07/2015

BIORESMETHRIN

bioresmethrin (INN),Cyclopropanecarboxylic Acid, 2,2-Dimethyl-3-(2-Methyl-1-Propenyl)-. [5-(Phenylmethyl)-3-Furanyl]methyl Ester, (1R-trans)-,,(+)-trans-Resmethrin

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

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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.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 28434-01-7

CAS 28434-01-7PubChem CID 162381

Bioresmethrin

Bioresmethrin is a member of furans and a resmethrin. It has a role as a pyrethroid ester insecticide. — ChEBI

IUPAC name: cis-(5-benzylfuran-3-yl)methyl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate

Molecular formula: C22H26O3
Molecular weight: 338.4 g/mol
Exact mass: 338.18819469 Da
XLogP3: 6.1
Topological polar surface area: 39.4 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 3
Covalent units: 1
Defined stereocentres: 2

Also known as

(+)-trans-ResmethrinBiobenzyfurolineBioresmethrineBioresmetrina1R-trans-Resemethrind-trans-Chrysrond-trans-ResmethrinBioresmethrinum

16 more reported names

YPP8YQZ13B5-Benzyl-3-furylmethyl (+)-trans-chrysanthemate5-Benzyl-3-furylmethyl (1R)-trans-chrysanthemate5-Benzyl-3-furylmethyl-d-trans-crysanthemateCHEBI:39280d-trans-(5-Benzyl-3-furyl)methyl chrysanthemated-trans-((5-Benzyl-3-furyl)methyl)chrysanthemumateCyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, (5-(phenylmethyl)-3-furanyl)methyl ester, (1R,3R)-(5-benzylfuran-3-yl)methyl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate(5-benzylfuran-3-yl)methyl (1R,3R)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate5-Benzyl-3-furylmethyl(+)-trans-chrysanthemateRefChem:568366249-014-0trans-ResmethrinBioresmethrin [INN]Resbuthrin

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:39280
ChEMBL:CHEMBL2106605
EPA DTXSID:DTXSID2034382
PubMed:31538121
PubMed:29183579
PubMed:29064635
PubMed:22525521
PubMed:22457653
PubMed:21665567
PubMed:20839770
PubMed:20019907
PubMed:19761868
PubMed:19249324
PubMed:18948380
PubMed:18680565

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 BIORESMETHRIN

INCI name

BIORESMETHRIN

Description

bioresmethrin (INN),Cyclopropanecarboxylic Acid, 2,2-Dimethyl-3-(2-Methyl-1-Propenyl)-. [5-(Phenylmethyl)-3-Furanyl]methyl Ester, (1R-trans)-,,(+)-trans-Resmethrin

Record provenance

Inventory reference: 92615
Imported identity: BIORESMETHRIN
Source update: 21/07/2015

European Commission CosIng source notes

Annex records for BIORESMETHRIN

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Key data

CAS

28434-01-7

249-014-0 (I)

Restriction

—

Function

—

Official EU ingredient-name evidence

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

#3417 · BIORESMETHRIN

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How BIORESMETHRIN appears in the CosIng inventory

The CosIng inventory lists BIORESMETHRIN 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.

Regulatory conditions, if any, come from Annex II–VI records and should be checked before use in a formulation.

Frequently asked questions

BIORESMETHRIN 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.

CAS 28434-01-7 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.

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Source note for BIORESMETHRIN

This page reproduces the CosIng inventory entry for BIORESMETHRIN 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 BIORESMETHRIN 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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