(-)-Nicotine ditartrate, >99%, (CAS 65-31-6), 10g

Vardenafil dihydrochloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 224789-15-5

o-Toluidine, 100 µg/ml, Cyclohexane, 1ml

3-Methylpyridine