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 70444R Aroclor 1262 Price on request 57729 Copper (Cu) Price on request H-203N 2,7-Dimethylnaphthalene, 10mg Price on request