D5-Metamitron, 100 µg/ml, Acetonitrile, 1ml

2,3,4,6-Tetrabromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

Naproxen, 100µg/ml in MeOH, 1ml

(S)-(+)-Pregabalin-d4 (Aminomethyl d2 - hexanoic acid-2,2-d2), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.