Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate (CAS 57934-97-1) — Woody Top to Middle Note Fragrance Ingredient

ByThe Good Scents
Woody · Green

Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate

CAS 57934-97-1

Origin
synthetic
Note
Top to Middle
IFRA
Generally safe
Data as of: Apr 2026

What Is Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate?

Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate is a synthetic fragrance ingredient used in modern perfumery. It contributes to fresh, woody, and slightly fruity accords. This molecule is found in various fine fragrances and personal care products, often as part of complex scent profiles.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check IFRA restrictions
CAS
57934-97-1
Formula
Mixture
MW
Variable
Odor Family
Woody · Green
Layer 1 · Enthusiast

What Does Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate Smell Like?

Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate offers a fresh, woody character with subtle fruity undertones. Its top note is crisp and slightly green, evolving into a heart with woody and slightly floral nuances. The dry-down reveals a clean, musky base that blends well with other woody and amber materials.

Scent Profile
Layer 2

2D Molecular Structure

Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate

SMILES: CCOC(=O)C1C(CC)=CCCC1(C)C

Chemistry, Properties & Perfumer Guide

The Chemistry

Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate is a synthetic ester derived from cyclohexene. It is typically synthesized through esterification reactions involving cyclohexene derivatives and ethyl alcohol. The molecule features a cyclohexene ring with ethyl and dimethyl substitutions, contributing to its unique olfactory profile.

Physical & Chemical Properties

Perfumer Guide

Note Position
Top to Middle
Volatility
Medium (1-3 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance1-5%Up to 10%Used as a fresh woody modifier
Personal Care0.5-3%Up to 5%Adds freshness to body care products

Classic Accords

Tip: Use in small amounts to enhance freshness in woody compositions.

Alternatives & Comparisons

1
Ethyl Linalool CAS 10339-55-6

Offers similar fruity-woody notes with better stability in formulations.

2
Verdox CAS 88-41-5

Provides a fresh woody character with higher volatility.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

General reference only. Consult current IFRA Standards Library before formulating.

IFRA Status

No specific IFRA restrictions.

RIFM Assessment

No specific RIFM assessment found.

Sustainability

As a synthetic ingredient, Ethyl 2-ethyl-6,6-dimethylcyclohex-2-ene-1-carboxylate is produced through controlled chemical processes, minimizing environmental impact. Its synthesis avoids the use of natural resources, making it a sustainable choice for modern perfumery.

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References

    Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.

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    Ingredient Data Sheet

    CAS 57934-97-1

    Physical Properties

    Molecular Weight210.31 g/mol🔬 PubChem
    LogP (Octanol-Water)3.4🔬 PubChem
    Boiling Point243 °C🔬 EPA CompTox
    Vapor Pressure0.0525 mmHg @ 25°C📊 OPERA
    Flash Point99.4 °C🔬 EPA CompTox
    Involatility Index0.0039💻 Calculated
    log Kp (skin permeability)-1.569💻 Calculated
    SMILESCCC1=CCCC(C1C(=O)OCC)(C)C🔬 PubChem

    Volatility & Performance

    Fragrance NoteHeart💻 Calculated
    Volatility ClassVery slow💻 Calculated
    Persistence Score2.6 / 5💻 Calculated

    Odor & Flavor

    Functional Groupsesteretheralkene💻 RDKit
    Data Sources & Attribution
    Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.

    Physicochemical Properties

    DTXSID: DTXSID1052240

    Physical Properties

    Molecular Weight 210.317 g/mol🔬 EPA CompTox
    Density 0.927 g/cm^3📊 OPERA
    Boiling Point 244.368 °C📊 OPERA
    Melting Point 20.777 °C📊 OPERA
    Flash Point 96.688 °C📊 OPERA
    Refractive Index 1.452 Dimensionless📊 OPERA
    Molar Volume 227.845 cm^3/mol📊 OPERA

    Partition & Solubility

    LogP (Octanol-Water) 4.338 Log10 unitless📊 OPERA
    LogD (pH 5.5) 4.338 Log10 unitless📊 OPERA
    LogD (pH 7.4) 4.338 Log10 unitless📊 OPERA
    LogKoa (Octanol-Air) 6.3 Log10 unitless📊 OPERA
    Water Solubility 0 mol/L📊 OPERA
    Henry's Law Constant 0 atm-m3/mole📊 OPERA

    Transport Properties

    Vapor Pressure 0.03 mmHg📊 OPERA
    Viscosity 3.02 cP📊 OPERA
    Surface Tension 28.402 dyn/cm📊 OPERA
    Thermal Conductivity 132.143 mW/(m*K)📊 OPERA

    Molecular Descriptors

    Topological Polar Surface Area 26.3 Ų💻 Computed
    H-Bond Donors 0 count💻 Computed
    H-Bond Acceptors 2 count💻 Computed
    Rotatable Bonds 3 count💻 Computed
    Aromatic Rings 0 count💻 Computed
    Molar Refractivity 61.502 cm^3/mol📊 OPERA
    Polarizability 24.381 Å^3📊 OPERA

    Data Sources:

    🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.

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