Dichlormid, 100µg/ml in Acetonitrile, 5ml

N-Acetyl-S-(carbamoylethyl-d4)-L-cysteine , 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 81690-92-8 (unlabelled compound)

Paraxanthine, neat, Solvent-neat, Unit 50mg, # of units-1, Cas.no. 611-59-6

Aroclor 1248 & Tetrachloro-m-xylene