1,1-Diphenylurea, 98%,neat,neat,10mg,

1H,1H,2H,2H-Perfluoro-n-octyl methacrylate-d5,50 µg/mL,MeOH,1mL,

Ethyl acetate, 20mg/mL in MeOH, 1ml

Metformin, 1000μg/ml in MeOH, 1ml