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

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

rac-cis-N-Desmethyl Sertraline Hydrochloride, 5mg

2-Chloro-1,3-butadiene