4-Isopropylaniline, 100 µg/ml, Methanol, 5ml

Anthraquinone, 100 µg/ml, Acetonitrile, 5ml

Metformin-HCl, 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)