Brivaracetam, 10mg

1,2,3,4-Tetrachloro[13C12]dibenzofuran (97.5%), 1.2ml x 48.75ug/ml, toluene

Fosthiazate, 100 µg/ml, Acetonitrile, 5ml

Naphthalene-d8, 100 µg/mL,toluene, 1mL