17-alpha-Ethynylestradiol Back Catalog number: 72742 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79418 2-Chloronaphthalene Price on request 680236 trans-3-Hydroxycotinine, 100 µg/ml, Methanol, 1m Price on request L18000128AL Pesticide-Mix 128, 20µg/mL in Acetonitrile, 10ml Price on request