3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate (CAS 6819-19-8) — Green Top to Middle Note Fragrance Ingredient

ByThe Good Scents
Green · Woody

3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate

CAS 6819-19-8

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

What Is 3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate?

3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate is a synthetic fragrance ingredient used in modern perfumery. It contributes to fresh, green, and woody accords. This molecule helps create contemporary scent profiles that balance natural and synthetic elements.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ No major safety concerns
⚠ Limited safety data available
CAS
6819-19-8
Formula
Mixture
MW
Variable
Odor Family
Green · Woody
Layer 1 · Enthusiast

What Does 3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate Smell Like?

This synthetic molecule offers a crisp, green character with woody undertones. The initial burst suggests freshly cut stems with a subtle citrus edge, evolving into a clean woody-herbaceous heart. The dry-down reveals a faintly musky, almost ambery quality that provides excellent diffusion. It behaves like a modern interpretation of classic woody-green materials but with enhanced stability and longevity.

Scent Profile
Layer 2

2D Molecular Structure

3-(4-Methylcyclohex-3-enyl)but-3-enyl acetate

SMILES: CC(=O)OCCC(=C)C1CCC(C)=CC1

Chemistry, Properties & Perfumer Guide

The Chemistry

3-(4-Methylcyclohex-3-enyl)-3-butenyl acetate belongs to the class of cyclohexenyl esters. It is produced through synthetic organic chemistry routes, typically involving esterification of the corresponding alcohol. The molecule features both cyclic and acyclic unsaturated components that contribute to its fresh-green olfactory profile. The acetate group enhances volatility while providing a fruity nuance.

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%Green-modifier
Functional Fragrance0.5-2%Up to 5%Freshness booster

Classic Accords

Tip: Use to modernize classic green accords without introducing harshness.

Alternatives & Comparisons

1
Verdox CAS 88-41-5

More intense green character with better diffusion but less woody depth.

2
Styrallyl acetate CAS 7785-33-3

Similar green profile but with stronger fruity-floral aspects.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

Not currently restricted by IFRA standards.

RIFM Assessment

Limited safety assessment available through RIFM databases.

Sustainability

As a synthetic material, this compound avoids natural resource depletion concerns. Production can be optimized for minimal environmental impact through green chemistry principles. The molecule’s stability contributes to longer-lasting fragrances, potentially reducing application frequency.

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References

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

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    Ingredient Data Sheet

    CAS 6819-19-8

    Physical Properties

    Molecular Weight208.3 g/mol🔬 PubChem
    LogP (Octanol-Water)3.1🔬 PubChem
    Boiling Point263 °C🔬 EPA CompTox
    Vapor Pressure0.0117 mmHg @ 25°C📊 OPERA
    Flash Point106.4 °C🔬 EPA CompTox
    Involatility Index0.0009💻 Calculated
    log Kp (skin permeability)-1.77💻 Calculated
    SMILESCC1=CCC(CC1)C(=C)CCOC(=O)C🔬 PubChem

    Volatility & Performance

    Fragrance NoteHeart💻 Calculated
    Volatility ClassVery slow💻 Calculated
    Persistence Score3.7 / 5💻 Calculated

    Odor & Flavor

    Primary Descriptorsgreenwoody• leffingwell
    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: DTXSID1052400

    Physical Properties

    Molecular Weight 208.301 g/mol🔬 EPA CompTox
    Density 0.972 g/cm^3📊 OPERA
    Boiling Point 267.813 °C📊 OPERA
    Melting Point -3.53 °C📊 OPERA
    Flash Point 106.957 °C📊 OPERA
    Refractive Index 1.476 Dimensionless📊 OPERA
    Molar Volume 216.266 cm^3/mol📊 OPERA

    Partition & Solubility

    LogP (Octanol-Water) 4.273 Log10 unitless📊 OPERA
    LogD (pH 5.5) 4.273 Log10 unitless📊 OPERA
    LogD (pH 7.4) 4.273 Log10 unitless📊 OPERA
    LogKoa (Octanol-Air) 6.71 Log10 unitless📊 OPERA
    Water Solubility 0.001 mol/L📊 OPERA
    Henry's Law Constant 0 atm-m3/mole📊 OPERA

    Transport Properties

    Vapor Pressure 0.006 mmHg📊 OPERA
    Viscosity 4.46 cP📊 OPERA
    Surface Tension 31.215 dyn/cm📊 OPERA
    Thermal Conductivity 134.097 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 4 count💻 Computed
    Aromatic Rings 0 count💻 Computed
    Molar Refractivity 61.028 cm^3/mol📊 OPERA
    Polarizability 24.193 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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