The 4-Methylhexanals

Chirality & Odour Perception
John C. Leffingwell, Ph.D.

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Photo by permission of M. Roudintska - Art & Parfum

(4R)-4-methylhexanal - Intensive, flowery, warm with a green & fresh note

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)

(4S)-4-methylhexanal - No fragrance impression at >0.25 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)

Cyclic Terpenoid Odorants

Bicyclic Terpenoid Odorants

Acyclic Terpenoid Odorants

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants

Steroid Urine Type Odorants

Sandalwood Type Odorants

Musk Odorants

Miscellaneous

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