4,7-Methano-1H-indene-5-acetaldehyde, octahydro- (CAS 1339119-15-1) — Woody Middle to base Note Fragrance Ingredient

ByThe Good Scents
Woody · Balsamic

4,7-Methano-1H-indene-5-acetaldehyde, octahydro-

CAS 1339119-15-1

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

What Is 4,7-Methano-1H-indene-5-acetaldehyde, octahydro-?

4,7-Methano-1H-indene-5-acetaldehyde, octahydro- is a synthetic fragrance ingredient used in modern perfumery to add woody, amber nuances. You’ll encounter it in fine fragrances and personal care products where it contributes to long-lasting scent profiles. This molecule matters because it helps perfumers create stable, complex accords that evolve beautifully on skin over time.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check IFRA restrictions
CAS
1339119-15-1
Formula
Mixture
MW
Variable
Odor Family
Woody · Balsamic
Layer 1 · Enthusiast

What Does 4,7-Methano-1H-indene-5-acetaldehyde, octahydro- Smell Like?

This synthetic aldehyde offers a sophisticated woody-ambergris character with subtle metallic undertones. Initially crisp and slightly camphoraceous, it evolves into a warm, musky dry-down reminiscent of sun-bleached driftwood. The scent profile bridges the gap between traditional amber materials and modern woody synthetics, behaving like a molecular chameleon that amplifies surrounding notes.

Scent Profile
Layer 2

2D Molecular Structure

4,7-Methano-1H-indene-5-acetaldehyde, octahydro-

SMILES: O=CCC1CC2CC1C1CCCC21

Chemistry, Properties & Perfumer Guide

The Chemistry

This bicyclic aldehyde belongs to the family of synthetic amber aroma chemicals. While its exact synthesis route is proprietary, similar compounds are typically produced through Diels-Alder reactions followed by hydrogenation and oxidation steps. The molecule’s rigid structure contributes to its exceptional stability and longevity in fragrance formulations.

Physical & Chemical Properties

Perfumer Guide

Note Position
Middle to base
Volatility
Moderate (2-6 hours)
Blending
Excellent
ApplicationTypical %RangeNotes
Fine Fragrance1-3%Up to 5%Used as woody-amber modifier
Personal Care0.5-1%Up to 2%Provides longevity

Classic Accords

Tip: Use with citrus top notes to create dynamic contrast in woody compositions.

Alternatives & Comparisons

1
Ambroxide CAS 6790-58-5

When seeking a more transparent ambery effect with less woody character.

2
Norlimbanol CAS 70788-30-6

For a more pronounced woody dryness without the amber facets.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No specific IFRA restrictions currently apply.

RIFM Assessment

Not currently assessed by RIFM.

Sustainability

As a synthetic material, this ingredient avoids natural resource depletion concerns. Modern production methods aim to minimize environmental impact through efficient catalysis and waste reduction strategies.

Explore 4,7-Methano-1H-indene-5-acetaldehyde, octahydro-

Browse essential oils and aroma compounds.

Browse on iHerb →

Affiliate disclosure: we may earn a small commission at no extra cost to you.

References

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

    Report a data error

    Ingredient Data Sheet

    CAS 1339119-15-1

    Physical Properties

    Molecular Weight178.27 g/mol🔬 PubChem
    LogP (Octanol-Water)3🔬 PubChem
    Boiling Point261 °C🔬 EPA CompTox
    Vapor Pressure0.0347 mmHg @ 25°C📊 OPERA
    Flash Point120.3 °C🔬 EPA CompTox
    Involatility Index0.0028💻 Calculated
    log Kp (skin permeability)-1.657💻 Calculated
    SMILESC1CC2C(C1)C3CC2CC3CC=O🔬 PubChem

    Volatility & Performance

    Fragrance NoteHeart💻 Calculated
    Volatility ClassVery slow💻 Calculated
    Persistence Score2.7 / 5💻 Calculated

    Odor & Flavor

    Primary Descriptorsbalsamicwoody• leffingwell
    Functional Groupsaldehyde💻 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: DTXSID60889292

    Physical Properties

    Molecular Weight 178.275 g/mol🔬 EPA CompTox
    Density 1.037 g/cm^3📊 OPERA
    Boiling Point 262.548 °C📊 OPERA
    Melting Point 73.433 °C📊 OPERA
    Flash Point 118.725 °C📊 OPERA
    Refractive Index 1.505 Dimensionless📊 OPERA
    Molar Volume 174.338 cm^3/mol📊 OPERA

    Partition & Solubility

    LogP (Octanol-Water) 3.145 Log10 unitless📊 OPERA
    LogD (pH 5.5) 3.145 Log10 unitless📊 OPERA
    LogD (pH 7.4) 3.145 Log10 unitless📊 OPERA
    LogKoa (Octanol-Air) 5.96 Log10 unitless📊 OPERA
    Water Solubility 0 mol/L📊 OPERA
    Henry's Law Constant 0 atm-m3/mole📊 OPERA

    Transport Properties

    Vapor Pressure 0.015 mmHg📊 OPERA
    Viscosity 13.184 cP📊 OPERA
    Surface Tension 37.301 dyn/cm📊 OPERA
    Thermal Conductivity 123.298 mW/(m*K)📊 OPERA

    Molecular Descriptors

    Topological Polar Surface Area 17.07 Ų💻 Computed
    H-Bond Donors 0 count💻 Computed
    H-Bond Acceptors 1 count💻 Computed
    Rotatable Bonds 2 count💻 Computed
    Aromatic Rings 0 count💻 Computed
    Molar Refractivity 51.736 cm^3/mol📊 OPERA
    Polarizability 20.51 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.

    Similar Posts