Allopurinol, 100µg/ml in Acetonitrile, 5ml

Diisobutyl phthalate-3,4,5,6-d4,1000 µg/mL,isooctane,1mL,

D3-(±)-Naproxen, 100 µg/ml, Methanol, 1ml

Dibromochloroacetic acid, 1000 µg/ml, tert-Butyl