Linked from
The 16 pages that link to Acetaldehyde, each with the reason it gives.
DiacetylRelated: It is another fermentation-derived volatile that shapes food aroma.
EthylamineRelated: Reductive amination of acetaldehyde provides an alternative route to ethylamine.
DisulfiramRelated: Its accumulation drives the characteristic alcohol–disulfiram reaction.
Haloform reactionRelated: Its methyl group allows it to form iodoform despite not being a ketone.
PropionaldehydeRelated: It is the shorter aldehyde homolog immediately below propionaldehyde.