2',3',4',5'-Tetrachloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

Sulfaquinoxaline sodium salt, 100 µg/ml, Methanol

Ciprofloxacin hydrochloride, certified, 0.1g

alpha alpha alpha (24R)-24-Methylcholest-3-ene and alpha alpha alpha (24R)-Ethylcholest-3-ene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 211423-39-9 / 376372-00-8