Paroxetine impurity E - (3RS,4RS)-3-[(1,3-benzodioxol-5-yloxy)methyl]-4-(4fluorophenyl)piperidine (cis-paroxetine)

Pefloxacin impurity B - 1-ethyl-6-chloro-7-(4-methylpiperazin-1-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (chlorinated homologue of pefloxacin)

Pefloxacin impurity C - 1-ethyl-6-fluoro-5-(4-methylpiperazin-1yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (isopefloxacin)

Pefloxacin mesilate dihydrate

Pemetrexed disodium heptahydrate

Pemetrexed for system suitability

Pemetrexed impurity mixture

Penbutolol impurity A - (2S)-1-[2-(cyclopent-1-enyl)phenoxy]-3-[(1,1-dimethylethyl)amino]propan-2-ol

Penbutolol sulphate

Penicillamine