HEDIONE® HC (High Cis) FIRMENICH - jasmine and magnolia notes

Hedione® HC (High Cis)

CAS No.: 24851-98-7
Main synonyms: Methyl dihydrojasmonate High Cis, Hedione High Cis
Manufacturer: Firmenich
Chemical Name: Cyclopentanoacetic acid, 2-oxo-2-pentyl-, methyl ester
Molecular formula: C₁₃H₂₂O₃
Molecular weight: 226 g/mol
Vapor pressure (20°C): 0.09 Pa
Appearance: Colorless liquid
Solvent: None added

Product Description

Hedione® HC (High Cis) is an advanced version of classic Hedione®, featuring a significantly higher content of the cis isomer—approximately 75%, much higher than most competing products. This unique configuration gives Hedione® HC superior olfactory power, with a fresh, floral-jasmine profile, sweet and clean, highly diffusive, and excellent fixative properties.

Firmenich describes this molecule as a powerful and unique floral note, reminiscent of magnolia blossoms, with exceptional boosting effects in olfactory compositions. It is particularly popular in fine perfumery, especially in modern men's fragrances, but is also widely used in women's fragrances due to its ability to enrich and illuminate compositions with a fresh, petal-like nuance.

Applications and usage

High-end men's and women's fragrances

Floral and transparent accords, especially jasmine and magnolia

Heart notes with a bright character

Frequently paired with Muscenone Delta and Exaltone crystals, especially in Chanel creations

Excellent enhancer to give radiance and roundness to fragrances

Olfactory characteristics

Smell: Fresh, floral (jasmine/magnolia), sweet, clean

Persistence on mouillette: up to 1 month

Effect on combustion: Moderate

Substantivity:

• On damp skin: Good
• On dry skin: Low

Technical indications

Recommended use: Up to 10% in the composition

Stability: Avoid in formulations with too acidic or basic pH, as it tends to decompose into classic Hedione

Optimal pH range: 5.5 – 7.0

Additional notes

Although it has a higher content of the cis isomer than classic Hedione, Hedione® HC is slightly less radiant due to its overall structure, but provides a superior olfactory richness.

Considered an indispensable molecule in the modern standards of fine perfumery.