Metformin-HCl, 100µg/ml in Acetonitrile, 5ml

Analytical Standard for n-Alkanes 1mL Use 100µg/mL in hexane as a working standard n-C10-C40 + Pristane

D4-Menthol, 100 µg/ml, Methanol, 1ml

D5-Benzoic acid, 500mg