o-Xylene-d10,neat,neat,5g,

Metoprolol (free base),neat,neat,50mg,

2,2,3,3,4,4,5,5-Octachlorobiphenyl

Isooctane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 540-84-1