2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime (CAS 81783-01-09) — Woody Top to Middle Note Fragrance Ingredient

ByThe Good Scents
Woody · Green

2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime

CAS 81783-01-09

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

What Is 2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime?

2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime is a synthetic fragrance ingredient used in fine perfumery. It adds a unique woody-green character to fragrances. This molecule is valued for its ability to enhance naturalness in compositions, often found in modern woody and fougère fragrances.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check manufacturer guidelines
CAS
81783-01-09
Formula
Mixture
MW
Variable
Odor Family
Woody · Green
Layer 1 · Enthusiast

What Does 2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime Smell Like?

This molecule offers a crisp, woody-green aroma with a subtle fruity undertone. It evolves from a fresh top note to a dry, slightly balsamic base, reminiscent of freshly cut wood and green leaves. The dry-down reveals a clean, slightly musky character that blends seamlessly with other woody notes.

Scent Profile
Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

2,4,4,7-Tetramethylnona-6,8-diene-3-one-oxime is a synthetic molecule belonging to the oxime class. It is typically synthesized through the condensation of ketones with hydroxylamine. Its structure contributes to its unique olfactory properties, making it a valuable tool for perfumers seeking to create modern, green-woody accords.

Physical & Chemical Properties

Perfumer Guide

Note Position
Top to Middle
Volatility
Medium (1-3 hours)
Blending
Good
ApplicationTypical %RangeNotes
Fine Fragrance1-5%Up to 10%Adds woody-green character
Functional Fragrance0.5-2%Up to 5%Enhances freshness

Classic Accords

Tip: Use in small amounts to enhance naturalness in woody compositions.

Alternatives & Comparisons

1
Vertofix CAS 68039-49-6

A more stable alternative with similar woody-green characteristics.

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

No specific RIFM assessment found.

Sustainability

As a synthetic molecule, its environmental impact depends on manufacturing processes. Sustainable synthesis methods are preferred to minimize ecological footprint.

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References

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

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