Retention Time Marker Solution Iowa OA-2

Bis(3-tert-butylphenyl) phenyl phosphate, 1.2ml x 50ug/ml, toluene

L-Histidine hydrochloride monohydrate, 250mg

o-Anisidine, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 90-04-0