6-Octenal, 3,7-dimethyl-, (3S)- (CAS 5949-05-03) — Citrus Top Note Fragrance Ingredient

ByThe Good Scents
Citrus · Sweet

6-Octenal, 3,7-dimethyl-, (3S)-

CAS 5949-05-03

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

What Is 6-Octenal, 3,7-dimethyl-, (3S)-?

6-Octenal, 3,7-dimethyl-, (3S)- is a synthetic fragrance ingredient used to impart fresh, citrusy, and slightly green notes to perfumes. It is commonly found in fine fragrances and household products. This molecule is valued for its ability to enhance top notes with a crisp, aldehydic character that evolves into a subtle floral heart.

Safety Profile

GENERALLY SAFE
Generally safeUse with awarenessProfessional use
✓ Safe in regulated products
⚠ Check for potential allergens
CAS
5949-05-03
Formula
Mixture
MW
Variable
Odor Family
Citrus · Sweet
Layer 1 · Enthusiast

What Does 6-Octenal, 3,7-dimethyl-, (3S)- Smell Like?

6-Octenal, 3,7-dimethyl-, (3S)- opens with a burst of fresh citrus, reminiscent of crushed lime leaves, followed by a green, slightly herbal heart. As it dries down, it reveals a soft floral undertone, like the whisper of magnolia petals. The overall effect is crisp yet delicate, with a clean, aldehydic finish.

Scent Profile

In Famous Fragrances

Fragrance associations may not reflect actual formulations.

Eau Dynamisante(Clarins, 1987)

Used to enhance the fresh, invigorating top notes, adding a crisp citrusy-green character that blends seamlessly with herbal and floral elements.

Layer 2

Chemistry, Properties & Perfumer Guide

The Chemistry

6-Octenal, 3,7-dimethyl-, (3S)- is an aldehyde with a molecular structure that includes a double bond and a chiral center at the 3-position. It is synthesized via oxidation of the corresponding alcohol or through Grignard reactions. The (3S)- configuration is crucial for its specific olfactory profile.

Physical & Chemical Properties

Boiling PointN/A
DensityN/A

Perfumer Guide

Note Position
Top
Volatility
High (15-60 min)
Blending
Excellent
ApplicationTypical %RangeNotes
Fine Fragrance3-8%Up to 15%Versatile top note modifier

Classic Accords

Tip: Use in small amounts to avoid overpowering the blend.

Alternatives & Comparisons

1
Citral CAS 5392-40-5

When a more pronounced lemon note is desired, citral can be used as an alternative.

Layer 3

Safety, Regulatory & Sustainability

⚠ Regulatory Disclaimer

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

IFRA Status

No IFRA restrictions apply to this ingredient.

EU Allergen Declaration

Not listed as an EU allergen.

RIFM Assessment

RIFM has assessed this ingredient as safe for use in current practices.

Sustainability

As a synthetic ingredient, 6-Octenal, 3,7-dimethyl-, (3S)- is produced in laboratories, reducing the need for natural resources. Its production can be optimized for minimal environmental impact through green chemistry practices.

Explore 6-Octenal, 3,7-dimethyl-, (3S)-

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. PubChem Compound Summary for 6-Octenal, 3,7-dimethyl-, (3S)- PubChem

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

Report a data error

Similar Posts