o-Toluidine, 100 µg/ml, Methanol, 5ml

O-Acetylsalicylic anhydride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1466-82-6

Etofylline, 100mg

EPA Method 537 Analyte Primary Dilution Standard, 2000ng/ml in MeOH, 1,2ml