Propetamphos, 10.0 µg/ml, Ethyl acetate, 10ml

Caffeine for system suitability, 10mg

L-Nicotine,1000 µg/mL,MeOH,1mL

Betamethasone, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 378-44-9