gamma-Undecalactone
Medium-smelling, fruity, lactonic, peachy, sweet, oily, powdery. Effective in low concentrations, otherwise it tends to overwhelm other notes and give ‘opacity’. It may also be used in floral compositions, tuberose for instance.
Mild, fruity, sweet, oily red fruit-like odour. It reminds of strawberry jam. It possesses a nondescript, waxy, fruity nuance.
Penetrating, waxy, green, citrusy, orange peel-juice-like, metallic, refreshing odour. Gives lift, character, and naturalness in fresh citrus blends.
Strong-smelling, sweet, waxy, powdery, peachy, heavy-floral, tuberose-like, warm, soapy. It blends well with florals, salicylates and musks.
Strong smelling, metallic, dry, powdery, fruity, odour. It has woody, green, citrusy undertones. Salicilyc nuance. Thinner and drier than aldehyde c12.
White crystal flakes.
@ 100% powerful, repulsive, pungent odour. Tarry, phenolic, almost faecal, dry.
@ 1% still powerful and phenolic, but softer. Floral, lily of the valley, honeysuckle, jasmine sambac, orange blossom.
@ .1% soft delicate, woody floral, jasmine, lily of the valley.
Very useful in floral composition @ .1 – .3 % max. It imparts a very realistic effect, a warm natural soul especially in muguet, honeysuckle and jasmine. In too high concentrations it lacks smoothness and imparts an acrid nuance, heasily recognizable during evaporation, especially on skin. I found it useful also in an imitation rum, for its opulent, decayed aspect (that goes well with fruity, woody notes).
It is quite sensitive to daylight and it discolors aldehydes and ketones.
Perfume chemicals 