Methylphenidate

1,4,5,8-Tetrachloronaphthalene (96%), 1.2ml x 48ug/ml, nonane

EPA Method 502/524 Volatile Standard, 2000µg/ml in MeOH, 1ml

alpha-Tocopherol-d6, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-5, Cas.no.