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 56155 Cesium (Cs) Price on request 79179 Endosulfan sulphate Price on request 54162 Nitrate & Nitrite as N Price on request