Octahydro-4,7-methano-1H-indenecarbaldehyde (CAS 30772-79-3) — Woody Middle to base Note Fragrance Ingredient

ByThe Good Scents
Woody · Balsamic

Octahydro-4,7-methano-1H-indenecarbaldehyde

CAS 30772-79-3

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

What Is Octahydro-4,7-methano-1H-indenecarbaldehyde?

Octahydro-4,7-methano-1H-indenecarbaldehyde is a synthetic fragrance ingredient used to add woody, amber-like nuances to perfumes. It’s found in high-end fragrances and personal care products. This aldehyde contributes to long-lasting scent profiles and is prized for its ability to enhance other notes without overpowering them.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check for individual sensitivity
CAS
30772-79-3
Formula
Mixture
MW
Variable
Odor Family
Woody · Balsamic
Layer 1 · Enthusiast

What Does Octahydro-4,7-methano-1H-indenecarbaldehyde Smell Like?

This aldehyde offers a complex olfactory profile, starting with a crisp, slightly green top note that evolves into a warm, woody heart. The dry-down reveals a subtle amber-like sweetness, reminiscent of sun-warmed forest resin. Its behavior is tenacious yet never cloying, making it a versatile backbone in modern perfumery.

Scent Profile
Layer 2

2D Molecular Structure

Octahydro-4,7-Methano-1H-indenecarboxaldehyde

SMILES: *C=O.C1CC2C3CCC(C3)C2C1 |lp:2:2,m:0:11.5.6.9.10.7.8.4.3.12|

Chemistry, Properties & Perfumer Guide

The Chemistry

Octahydro-4,7-methano-1H-indenecarbaldehyde belongs to the class of bicyclic aldehydes. It is synthesized through Diels-Alder reactions followed by oxidation steps. The molecule’s rigid structure contributes to its stability and distinctive odor profile. Its aldehyde group is key to its reactivity and scent characteristics.

Physical & Chemical Properties

Perfumer Guide

Note Position
Middle to base
Volatility
Medium (2-6 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance1-5%Up to 10%Adds woody-amber depth
Personal Care0.5-2%Up to 3%Used for longevity

Classic Accords

Tip: Use with citrus notes to brighten the woody character.

Alternatives & Comparisons

1
Ambrox CAS 6790-58-5

When a more diffuse amber note is desired.

2
Norlimbanol CAS 70788-30-6

For a more pronounced woody effect.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

Not currently restricted by IFRA.

RIFM Assessment

RIFM has conducted safety assessments confirming its safe use in current applications.

Sustainability

As a synthetic material, its production can be controlled for minimal environmental impact. Modern synthesis routes aim for atom economy and reduced waste.

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References

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

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    Ingredient Data Sheet

    CAS 30772-79-3

    Physical Properties

    Molecular Weight164.24 g/mol🔬 PubChem
    LogP (Octanol-Water)2.6🔬 PubChem
    log Kp (skin permeability)-1.856💻 Calculated
    SMILESC1CC2CC1C3C2C(CC3)C=O🔬 PubChem

    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: DTXSID0051990

    Physical Properties

    Molecular Weight 164.24 g/mol🔬 PubChem

    Partition & Solubility

    LogP (Octanol-Water) 2.559 dimensionless💻 Computed

    Molecular Descriptors

    Topological Polar Surface Area 17.07 Ų💻 Computed
    H-Bond Donors 0 count💻 Computed
    H-Bond Acceptors 1 count💻 Computed
    Rotatable Bonds 0 count💻 Computed
    Aromatic Rings 0 count💻 Computed
    Molar Refractivity 46.6 cm^3/mol💻 Computed

    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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