17a-Ethinylestradiol, certified, 0.25g Back Catalog number: C13245100 Availability: In the manufacturer's stock Price on request - + Recommended HPCHLOR-XEP Heptachlor-exo-epoxide (isomer B), 1.2mL x 100ug/mL, nonane Price on request MBDE-153 2,2',4,4',5,5'-Hexabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request AC-AQ50-015 Aqueous ethanol control EtOH AQ (5.0g/L), 10x1,5ml Price on request