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Nonane is found in common oregano. Nonane is present in numerous plant oils including olive oils.Nonane is a linear alkane hydrocarbon with the chemical formula C9H20. Nonane has 35 structural isomers. (Wikipedia

2,2,3,4-Tetramethylpentane is found in alcoholic beverages. 2,2,3,4-Tetramethylpentane is a constituent of Jasminum sambac (Arabian Jasmine) and Humulus lupulus (hops)

2,3,4-Trimethylhexane is found in fats and oils. 2,3,4-Trimethylhexane is isolated from the flowers of Helianthus annuus (sunflower

3,4-Dimethylheptane is found in green vegetables. 3,4-Dimethylheptane is a constituent of the flowers of Osmanthus fragrans (sweet osmanthus) and Viola odorata (sweet violet)

Isononane is found in alcoholic beverages. Isononane is a major constituent of oil of Hypericum perforatum (St. John's Wort

3-methyl-4-ethylhexane is a member of the class of compounds known as branched alkanes. Branched alkanes are acyclic branched hydrocarbons having the general formula CnH2n+2. 3-methyl-4-ethylhexane can be found in wild celery, which makes 3-methyl-4-ethylhexane a potential biomarker for the consumption of this food product.

2,3-dimethylhexane

3-methyloctane

4-Methyloctane

2,2,4-Trimethylhexane

2,5-dimethyl-heptane

4-ethyl-heptane

2,4-dimethylhexane

2,2,3,3-tetramethylpentane

2,2-Dimethyl-3-ethylpentane

3-Ethylheptane

An alkane that is heptane in which a hydrogen has been replaced by a methyl group at positions 2 and 4." []

An alkane that is hexane substituted by a methyl group at positions 2,3 and 5." []