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 59785 Arsenic (As) Price on request 52045 Calibration Standard Mix 3 Price on request 673783 Demeton-S, 100 µg/ml, Ethyl acetate, 5ml Price on request