2,2',3,4,5,6-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Sildenafil-d8 (piperazine-d8),100 µg/mL,MeOH,1mL

Metoprolol-d7 hydrochloride (isopropyl-d7), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1219798-61-4

Chlorotoluron-desmethyl, 100 µg/ml, Acetone, 1ml