25-Hydroxyvitamin D2-d6, 50µg/ml in MeOH, 1ml

d4 Pregnane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 205529-77-7

Norflurazon, 100 µg/ml, Acetonitrile, 1ml

D10-Phenylbutazone, 10mg