Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)- (CAS 1196-01-06) — Woody Top to heart Note Fragrance Ingredient

ByThe Good Scents
Woody · Green

Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)-

CAS 1196-01-06

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

What Is Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)-?

Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)- is a synthetic fragrance ingredient used in perfumery. It is not commonly encountered in everyday products but may appear in niche or artisanal fragrances. This molecule contributes unique olfactory properties that enhance modern scent compositions.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Limited safety data available
CAS
1196-01-06
Formula
Mixture
MW
Variable
Odor Family
Woody · Green
Layer 1 · Enthusiast

What Does Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)- Smell Like?

This synthetic molecule offers a crisp, woody-pine character with subtle citrus undertones. It evolves from a sharp, almost camphoraceous top note to a smoother, resinous heart. The dry-down reveals a clean, slightly balsamic finish, making it versatile for modern woody and fougère accords.

Scent Profile
Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

Bicyclo[3.1.1]hept-3-en-2-one, 4,6,6-trimethyl-, (1S,5S)- is a bicyclic ketone with a distinct woody-pine odor profile. It is synthesized via isomerization of pinene derivatives or oxidation routes. The (1S,5S)- stereochemistry is crucial for its olfactory characteristics, as enantiomeric purity affects scent quality.

Physical & Chemical Properties

Boiling PointNot available
DensityNot available

Perfumer Guide

Note Position
Top to heart
Volatility
Medium (1-3 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance1-5%Up to 10%Woody-pine modifier
Functional Fragrance0.5-2%Up to 5%Clean, woody accents

Classic Accords

Tip: Use sparingly to avoid overpowering woody notes.

Alternatives & Comparisons

1
Pinocarvone CAS 30460-92-5

Offers similar pine-woody character but with more pronounced camphoraceous notes.

2
Verbenone CAS 1196-01-6

Provides a fresher, more herbal-pine profile suitable for green accords.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No specific IFRA restrictions apply.

RIFM Assessment

Limited RIFM assessment data available.

Sustainability

As a synthetic molecule, it is produced via controlled chemical processes with minimal environmental impact. Sourcing is not dependent on 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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