Ethynylestradiol (20,21-13C2,99%) 100 µg/mL in Acetonitrile, 1,2ml Back Catalog number: CLM-3375-1.2 Availability: In the manufacturer's stock Price on request - + Recommended DF-123489-S 1,2,3,4,8,9-Hexachlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 10379.25 d-Norpropoxyphene maleate Price on request 12556.15-K-ME Gemfibrozil-d6, 1000µg/ml in MeOH, 1ml Price on request