OFLOXACIN

2,3,4-Trifluoro aniline

2,3,4,5-Tetrafluoro benzoic acid

OMEPRAZOLE

2,3,5-Trimethyl pyridine

2-Mercapto-5-methyl-1H- benzimidazole

2-Chloromethyl-3,5-dimethyl-4-methoxypyridine HCl

4-Methoxy-3,5-dimethyl-2-hydroxymethyl pyridine

ONDANSETRON 

2-Methyl imidazole

1,2,3,9-Tetrahydro-9-methyl-4H-carbazol-4-one

3-[(Dimethylamino)methyl]-1,2,3,9-tetrahydro-9-methyl-4H-carbazole-4-one

OXCARBAZEPINE 

Iminostilbene

Iminostilbene carbonyl chloride

10-Methoxy iminostilbene

Carbamazepine

OXYBUTYNIN BASE

Cyclohexylmandelic acid methyl ester