Internal Standard Stock Solution, 1.2ml, nonane

Carbetamide,1000 µg/mL,neat,1mL,

Diisodecyl phthalate [mix of isomers], 10mg/ml in MeOH, 1ml

(±)-Methoxyverapamil hydrochloride,1000 µg base/mL,MeOH,1mL,