Fluvoxamine for system suitability

Fluvoxamine impurity D - 5-methoxy-1-[4-(trifluoromethyl)phenyl]pentan-1-one

Fluvoxamine maleate

Foeniculin for peak identification Anise oil

Folic acid

Folic acid impurity A - (2S)-2-[(4-aminobenzoyl)amino]pentanedioic acid (N-(4-aminobenzoyl)-l-glutamic acid)

Folic acid impurity D - 4-[[(2-amino-4-oxo-1,4-dihydropteridin-6-yl)methyl]amino]benzoic acid (pteroic acid)

Follitropin

Follitropin for peptide mapping and glycan analysis

Formoterol for impurity I identification