Cyclopropanemethanol, 1-methyl-2-[[(1R,3R)-2,2,3-trimethylcyclopentyl]methyl]-, (1R,2R)- (CAS 1181244-95-0) — Woody Middle Note Fragrance Ingredient

ByThe Good Scents
Woody · Balsamic

Cyclopropanemethanol_, 1-_methyl-_2-_[[(1R,_3R)_-_2,_2,_3-_trimethylcyclopentyl_]_methyl]_-_, (1R,_2R)_-

CAS 1181244-95-0

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

What Is Cyclopropanemethanol_, 1-_methyl-_2-_[[(1R,_3R)_-_2,_2,_3-_trimethylcyclopentyl_]_methyl]_-_, (1R,_2R)_-?

This synthetic fragrance ingredient is a specialized molecule used in modern perfumery to create unique olfactory effects. While not commonly encountered in everyday products, it may appear in niche or avant-garde fragrances. Its complex structure allows perfumers to craft novel scent profiles that push creative boundaries.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ No major safety concerns reported
⚠ Limited safety data available
CAS
1181244-95-0
Formula
Mixture
MW
Variable
Odor Family
Woody · Balsamic
Layer 1 · Enthusiast

What Does Cyclopropanemethanol_, 1-_methyl-_2-_[[(1R,_3R)_-_2,_2,_3-_trimethylcyclopentyl_]_methyl]_-_, (1R,_2R)_- Smell Like?

This molecule offers a sophisticated olfactory profile with crisp, woody undertones and a subtle metallic edge. The initial impression is clean and slightly camphoraceous, evolving into a refined woody-amber character with excellent diffusion. The dry-down reveals a smooth, almost mineral-like quality that adds modernity to fragrance compositions.

Scent Profile
Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

This cyclopropane derivative belongs to the family of synthetic woody-amber molecules. Its complex bicyclic structure features multiple chiral centers that contribute to its distinctive olfactory properties. While specific synthesis routes are proprietary, it likely involves catalytic cyclization and stereoselective reduction steps to achieve the desired stereochemistry.

Physical & Chemical Properties

Perfumer Guide

Note Position
Middle
Volatility
Medium (2-4 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance0.5-2%Up to 5%Modern woody modifier
Functional Fragrance0.1-0.5%Up to 1%Clean base note

Classic Accords

Tip: Use as a modernizing agent in woody-amber bases to add lift and diffusion.

Alternatives & Comparisons

1
Ambroxan CAS 6790-58-5

More widely available woody-amber molecule with similar diffusion properties but less metallic character.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No IFRA restrictions currently apply to this material.

RIFM Assessment

Full safety assessment pending due to limited commercial use history.

Sustainability

As a synthetic material, this ingredient avoids natural resource depletion concerns. However, its complex synthesis likely requires multiple steps with associated energy inputs. Future green chemistry approaches may improve its environmental profile.

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References

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

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    Ingredient Data Sheet

    CAS 1181244-95-0
    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.

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