Kibdelone C
Kotanin
Kumbicin C
Kojic acid
5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one, NSC 1942
Karrikinolide
KAR1, Karrikin 1
Karrikin 2
KAR2
Kreysigine
(-)-Kreysigine, Kreysigin
Karrikinolide 3-ethyl ester
Kynurenic acid
NSC 58973, 4-Hydroxyquinoline-2-carboxylic acid, Quinurenic acid