Difenoxuron, 100 µg/ml, Acetonitrile, 1ml

Oxytetracycline 13C22,15N2 dried down 2.5 µg/mL, 5 x 1ml

Furfural-3,4,5-d3 (stabilized with BHT),neat,neat,100mg

n-Dodecane, ?13C: -32.54, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 112-40-3