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 682584 Benzyl chloride, 1000mg Price on request 681349 1-Naphthyl acetic acid-ethyl ester, 250mg Price on request 676437 Pyriofenone, 10mg Price on request