Sodium p-n-dodecylbenzenesulfonate, 100µg/mL in MeOH, 1ml

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

Caffeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 58-08-2

Behenic acid, 100 µg/ml, Acetonitrile, 1ml