Metformin Hydrochloride, 1g

n-Heptadecane, ?13C: - 25.72, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 629-78-7

Fentanyl-D5

N-Nitroso-N,N-di-(7-methyloctyl)amine, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 643014-99-7