Synthetics
Methyl cyclo pentenolone smells like a sweet and caramelic scent with notes of maple syrup, burnt coffee, and bread.
Mosciano, Gerard P&F 17, No. 4, 33, (1992): Caramellic, maple, sweet, burnt, coffee, bready nuances
Luebke, William tgsc, (1986): Sweet caramel maple sugar coffee woody
PerfumersWorld: Sweet caramel sugar maple woody sweet aromatic fruity
Blends-well-with - +delphone +rhodipol/c +celery seed resin +coriander +lovage
Moellhausen: Sweet, somewhat aromatic-fruity; slightly roasted and burnt
Pell Wall Perfumes: Sweet, caramel, maple sugar, coffee, woody, curry, bready
Arctander suggests it “is used sparingly in perfume compositions often in combination with coumarin or coumarin derivatives. it is an excellent fortifier for such materials in lavender fragrances, new mown hay, tabac’ type fragrances, spicy bases, etc. it falls naturally into celery seed oil, lovage, fenugreek, tonka, liatris, flouve etc.” and he also describes it as “sweet and very powerful, caramellic-spicy odor, described by different individuals with quite a variation of terms and phrases: walnut maple licorice celery tobacco etc. particularly when studied in the un-diluted state by laymen.
Sigma-Aldrich: Caramel; maple; smoky; coffee; nutty