Orfamide B
Oligomycin D
Rutamycin, 26-demethyloligomycin A, A 272, RR 32705, Rutamycin A
Oligomycin E
26-hydroxy-28-oxooligomycin A
Octanoyl-L-homoserine lactone
C8-HSL, OHL, N-Octanoyl-L-homoserine lactone
Octadecanoyl-L-homoserine lactone
C18-HSl, N-Octadecanoyl-L-homoserine lactone
Oxytetracycline hydrochloride
5-Hydroxytetracycline hydrochlride, Terramycin hydrochloride, Oxytetrin, Tetran hydrochloride
Oxychloroaphine
Oxychloraphin, Phenazine-1-carboxyamide, Xanthoraphine
Ochratoxin C
(+)Oxanthromicin