Metoprolol tartrate, 250mg

ASTM D-4815 Quantitation Peak ID Mix

Di-n-octyl phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 93952-13-7

Dinaphtho[2,1-b;1',2'-d]thiophene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 194-65-0