Tri-m-tolyl phosphate , 1.2ml x 50ug/ml, toluene

Sodium 1H,1H,2H,2H-[1,2-13C2]perfluorooctylphosphate, 1.2ml x 50ug/ml, methanol

Sotalol hydrochloride, 100mg

525.2 Internal & Surrogate Standard