4,7-Methano-1H-inden-5-ol, 3a,4,5,6,7,7a-hexahydrodimethyl- (CAS 79771-15-6) — Woody Middle to base Note Fragrance Ingredient

ByThe Good Scents
Woody · Balsamic

4,7-Methano-1H-inden-5-ol, 3a,4,5,6,7,7a-hexahydrodimethyl-

CAS 79771-15-6

Origin
synthetic
Note
Middle to base
IFRA
Use with awareness
Data as of: Apr 2026

What Is 4,7-Methano-1H-inden-5-ol, 3a,4,5,6,7,7a-hexahydrodimethyl-?

4,7-Methano-1H-inden-5-ol is a synthetic fragrance ingredient used in modern perfumery to add woody, amber-like nuances. It’s found in some niche fragrances and body care products. This molecule matters because it helps create long-lasting, complex scent profiles that mimic natural ambergris but without animal-derived ingredients. It’s part of the perfumer’s toolkit for sustainable luxury fragrances.

Safety Profile

USE WITH AWARENESS
Generally safeUse with awarenessProfessional use
✓ IFRA approved for use
⚠ Limited toxicity data available
CAS
79771-15-6
Formula
Mixture
MW
Variable
Odor Family
Woody · Balsamic
Layer 1 · Enthusiast

What Does 4,7-Methano-1H-inden-5-ol, 3a,4,5,6,7,7a-hexahydrodimethyl- Smell Like?

This synthetic amber material opens with a crisp, slightly camphoraceous edge that quickly mellows into a warm woody-amber heart. Imagine the dry mineral quality of sea-washed driftwood blended with the faint sweetness of aged cognac barrels. As it dries down, it develops a subtle animalic nuance reminiscent of clean musk, without being overpowering. The dryout reveals exceptional tenacity, leaving a sophisticated trail that bridges woody and ambery accords.

Scent Profile
Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

4,7-Methano-1H-inden-5-ol belongs to the bicyclic terpenoid alcohol class, structurally related to camphor but with distinct aromatic properties. While not found in nature, its synthesis typically begins with camphene or similar terpene precursors through Diels-Alder reactions followed by selective hydrogenation. The dimethyl substitution pattern contributes to its stability and diffusion properties. The molecule’s rigid bicyclic framework gives it excellent persistence in fragrance formulations.

Physical & Chemical Properties

Perfumer Guide

Note Position
Middle to base
Volatility
Moderate (2-6 hours)
Blending
Good with woody notes
ApplicationTypical %RangeNotes
Fine Fragrance0.5-2%Up to 5%Amber accord modifier
Body Care0.1-0.5%Up to 1%Longevity booster

Classic Accords

Tip: Use with ionones to soften the camphoraceous edge and enhance diffusion.

Alternatives & Comparisons

1
Ambroxan CAS 6790-58-5

More marine/ambergris character with better substantivity for ultra-premium applications.

2
Norlimbanol CAS 70788-30-6

For more pronounced woody dryness without the amber sweetness.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No current IFRA restrictions. Listed on IFRA Transparency List with no usage limits specified.

RIFM Assessment

Not currently evaluated by RIFM. Considered low priority due to limited market presence.

Sustainability

As a synthetic ingredient, this molecule avoids harvesting pressures on natural resources. Production typically uses petrochemical feedstocks, though some manufacturers may employ bio-based precursors. The environmental impact is moderate compared to natural ambergris substitutes, with no known aquatic toxicity issues at usage levels.

Explore 4,7-Methano-1H-inden-5-ol, 3a,4,5,6,7,7a-hexahydrodimethyl-

Browse essential oils and aroma compounds.

Browse on iHerb →

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

References

  1. IFRA Transparency List (2023). International Fragrance Association. IFRA Official
  2. Arctander, S. (1969). Perfume and Flavor Chemicals. Allured Publishing.

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

Report a data error

Similar Posts