2-methyl-1-propanal

green aldehyde

Found in 1 ingredient across the CompKitchen flavor graph.

Look up another compound — search by name, CAS number, PubChem CID, or FEMA #.

Properties

Odor threshold: 1.5 ppb
Retention index: 823

Not in FEMA GRAS publications 1-33. Of 3,367 listed flavoring substances, none match this compound name. May still be food-safe under other regulatory routes (FDA 21 CFR 172, EFSA, JECFA) — check femaflavor.org for the authoritative current list.

Thresholds in published tables

Numbers printed in open-access papers, grouped by the medium the table states. Median and full range of the values; “agree” means two or more papers whose middle 80% of values sit within 100×. Not reviewed.

Medium	Median	Range	Values	Papers	Papers agree?
air	0.49 µg/L air	0.0015–1.5e+03	7	6	no (5.9 decades)
ethanol solution	1300 ppb	5.9–1.3e+03	5	3	no (2.3 decades)
food matrix	2.45 ppb	0.35–8e+03	14	14	no (2.8 decades)
oil	236.5 ppb	43–430	2	2	yes
unstated	6 ppb	0.006–1.3e+06	39	33	no (3.4 decades)
water	1.5 ppb	0.49–1.31e+03	23	20	yes

Found in

Measured impact first, then profile share

Every ingredient known to contain 2-methyl-1-propanal. Ingredients with a measured concentration come first, ranked by odour activity; the rest follow by how large a share of that ingredient's profile this molecule is. The figure beside each is how many different compounds that ingredient has in total — not the concentration of 2-methyl-1-propanal in it.

truffle

fungus

101 cmpds

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