USP Octinoxate RS [octyl methoxycinnamate] .

USP Octisalate RS [octyl salicylate] .

USP Octocrylene RS .

USP Octoxynol 9 RS .

USP Octyldodecanol RS .

USP Ofloxacin RS .

USP Ofloxacin Related Compound A RS [9-fluoro-3-methyl-7-oxo-10-(piperazin-1-yl)-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid] .

USP Oleic Acid RS.

USP Oleoyl Polyoxylglycerides RS .

USP Oleyl Oleate RS.

USP Omeprazole RS .

USP Omeprazole Magnesium RS.

USP Omeprazole Related Compound A RS [(omeprazole sulfone, 5-methoxy-2-[[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfonyl]-1H-benzimidazole)] (C17H19N3O4S 361.42 CAS-88546-55-8).

USP Ondansetron Hydrochloride RS .

USP Ondansetron Related Compound A RS [3[(dimethylamino)methyl]-1,2,3,9-tetrahydro-9-methyl-4H-carbazol-4-one] .

USP Ondansetron Related Compound B RS [6,6¢-methylene bis-[(1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)-methyl]-4H-carbazol-4-one] .

USP Ondansetron Related Compound C RS [1,2,3,9-tetrahydro-9-methyl-4H-carbazol-4-one] .

USP Ondansetron Related Compound D RS [1,2,3,9-tetrahydro-9-methyl-3-methylene-4H-carbazol-4-one] .

USP Ondansetron Resolution Mixture RS— Ondansetron hydrochloride having approximately 0.4% w/w of both ondansetron related compound A and 6,6¢-methylene bis-[(1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)-methyl]-4H-carbazol-4-one)].

USP Orphenadrine Citrate RS .

USP Oxacillin Sodium RS .

USP Oxandrolone RS .

USP Oxandrolone Related Compound A RS [(7,8-didehydro-oxandrolone) or (17-hydroxy-17-methyl-2-oxa-5-androst-7-en-3-one)].

USP Oxandrolone Related Compound B RS [(anhydro-oxandrolone) or (17-17-dimethyl-2-oxa-18-nor-5-androstan-3-one)].

USP Oxandrolone Related Compound C RS [anhydro-oxandrolone (17,17-dimethyl-2-oxa-18-nor-5-androstan-3-one)] .

USP Oxaprozin RS .

USP Oxazepam RS .

USP Oxfendazole RS .

USP Oxprenolol Hydrochloride RS .

USP Oxtriphylline RS .

USP Oxybenzone RS .

USP Oxybutynin Chloride RS .

USP Oxybutynin Related Compound A RS [phenylcyclohexylglycolic acid] (C14H18O3 234.30) .

USP Oxybutynin Related Compound B RS [methyl ester of phenylcyclohexylglycolic acid, or CHMME (cyclohexyl mandelic acid methyl ester)] .

USP Oxybutynin Related Compound C RS [methylethyl analog of oxybutynin chloride, or (4-(ethylmethylamino) but-2-ynyl (±) 2-cyclohexyl-2-hydroxy-2-phenylacetate hydrochloride)] .

USP Oxycodone RS .

USP Oxygen–Helium RS.

USP Oxymetazoline Hydrochloride RS .

USP Oxymetholone RS .

USP Oxymorphone RS .

USP Oxyquinoline Sulfate RS .

USP Oxytetracycline RS .

USP Oxytocin RS .