Penicillin G, 1000µg/ml in MeOH, 1ml

Sodium perfluoro-1-propanesulfonate, 1.2ml x 50ug/ml, methanol

alpha alpha alpha (20R,23R,24R)-4 alpha,23,24-Trimethylcholestane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. 146276-37-1

Phenanthrene-d10,100 µg/mL,isooctane,1mL,