Methyl-3-hexyl-2-cyclopenten-2-one (Veloutone / Delphone-type cyclopentanone) has a warm, creamy jasmine-fruity odor with a distinctive celery-like nuance and a soft woody undertone. It adds volume and a fatty-floral roundness to white-floral and fruity accords.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 885.
Pale straw-colored oily liquid.
Almost insoluble in water, soluble in alcohol and oils. Soluble in Propylene glycol.
Warm-spicy, sweet-floral and diffusive, yet quite tenacious odor. Its power and floral beauty does not quite match that of cis-Jasmone.
It has a sweet, warm-floral-spicy, almost breadlike taste in dilutions below 5 ppm. The pleasant taste level is about 0.2 to 0.5 ppm.
Although rarely offered under its proper chemical name, this ketone finds some use in perfume compositions. Its floral power, its warmth combined with a versatile and pleasant spiciness makes it widely applicable. It blends excellently with Labdanum and Cistus-products, with Rose materials and Civet, and it gives interesting effects as part of novel topnotes, particularly with herbaceous or floral-herbaceous fragrance pictures.
1) from 3-Methylcyclopenten-2-one plus Hexaldehyde, followed by hydrogenation. 2) from Heptyl magnesiumchloride plus Ethyl levulinate to yield the Lactone which is subsequently treated with Phosphorous Pentoxide.