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(2S,4S)-2,4-Dimethyl-2-(1,1,3,3-tetramethylindan-5-yl)-1,3-dioxolane - rather weak woody–ambery odor of powdery tonality with some additional mineral character reminiscent of wet stones Odor threshold = 20 ngL-1 air (+/- 7.2 s.d.) = (2S,4S)-2-(2,3-dihydro-1,1,3,3-tetramethyl-1H-inden-5-yl)-2,4-dimethyl-1,3-dioxolane = (2S,4S)-2,4-dimethyl-2-(1,1,3,3-tetramethyl-2,3-dihydro-1H-inden-5-yl)-1,3-dioxolane Ref: Jennifer B. Natscher, Nadine Laskowski, Philip Kraft, and Reinhold Tacke, Lower Homologues of Okoumal and Disila-Okoumal: Synthesis and Olfactory Characterization of Novel Ambergris Odorants, ChemBioChem, 2010, 11, 315 – 319

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(2R,4R)-2,4-Dimethyl-2-(1,1,3,3-tetramethylindan-5-yl)-1,3-dioxolane - woody–ambery odor with warm animalic aspects in the direction of Dione (Givaudan trade name for 2-[(3,3,5-trimethylcyclohexyl)acetyl]cyclopentanone) and slightly green, somewhat harsh aspects Odor threshold = 2.5 ngL-1 air (+/- 1.9 s.d) = (2R,4R)-2-(2,3-dihydro-1,1,3,3-tetramethyl-1H-inden-5-yl)-2,4-dimethyl-1,3-dioxolane = (2R,4R)-2,4-dimethyl-2-(1,1,3,3-tetramethyl-2,3-dihydro-1H-inden-5-yl)-1,3-dioxolane Ref: Jennifer B. Natscher, Nadine Laskowski, Philip Kraft, and Reinhold Tacke, Lower Homologues of Okoumal and Disila-Okoumal: Synthesis and Olfactory Characterization of Novel Ambergris Odorants, ChemBioChem, 2010, 11, 315 – 319

(2S,4R)-2,4-Dimethyl-2-(1,1,3,3-tetramethylindan-5-yl)-1,3-dioxolane - weak metallic odor with uncharacteristic woody–ambery aspects Odor threshold = 18 ngL-1 air (+/- 8.9 s.d.) = (2S,4R)-2-(2,3-dihydro-1,1,3,3-tetramethyl-1H-inden-5-yl)-2,4-dimethyl-1,3-dioxolane = (2S,4R)-2,4-dimethyl-2-(1,1,3,3-tetramethyl-2,3-dihydro-1H-inden-5-yl)-1,3-dioxolane Ref: Jennifer B. Natscher, Nadine Laskowski, Philip Kraft, and Reinhold Tacke, Lower Homologues of Okoumal and Disila-Okoumal: Synthesis and Olfactory Characterization of Novel Ambergris Odorants, ChemBioChem, 2010, 11, 315 – 319

(2R,4S)-2,4-Dimethyl-2-(1,1,3,3-tetramethylindan-5-yl)-1,3-dioxolane - woody–ambery odor of powdery tonality Odor threshold = 1.5 ngL-1 air (+/- 1.2 s.d.) = (2R,4S)-2-(2,3-dihydro-1,1,3,3-tetramethyl-1H-inden-5-yl)-2,4-dimethyl-1,3-dioxolane = (2R,4S)-2,4-dimethyl-2-(1,1,3,3-tetramethyl-2,3-dihydro-1H-inden-5-yl)-1,3-dioxolane Ref: Jennifer B. Natscher, Nadine Laskowski, Philip Kraft, and Reinhold Tacke, Lower Homologues of Okoumal and Disila-Okoumal: Synthesis and Olfactory Characterization of Novel Ambergris Odorants, ChemBioChem, 2010, 11, 315 – 319

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Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants