Mefenacet, 10 µg/ml, Acetonitrile, 10ml

Guanylurea, 1000µg/ml in Water, 1ml

(±)-Albuterol-d3 (3-hydroxymethyl-d2; alpha-d1),1000 µg/mL,MeOH,1mL,

alpha-Hydroxymetoprolol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 56392-16-6