(3R)-3-methylpentanal - No fragrance impression at >2.5 ppm in air Ref: Dietmar Bartschat , A. Mosandl, Stereoisomeric flavour compounds LXXX: alkyl-branched alkanals - stereodifferentiation, structure elucidation and structure - function relationship, Z. Lebensm.-Unters. Forsch., 206(3), 165-168 (1998)

(3S)-3-methylpentanal - Intensive green, fresh, in high concentrations sweet(y) & faint fruity; in low concentrations - a slightly pungent odor Odor threshold = 0.03 ppm in air Ref: Dietmar Bartschat , A. Mosandl, Stereoisomeric flavour compounds LXXX: alkyl-branched alkanals - stereodifferentiation, structure elucidation and structure - function relationship, Z. Lebensm.-Unters. Forsch., 206(3), 165-168 (1998)

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants