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 S-4565-8K-ETX5 EN 15721 Internal Standard Stock Solution, procedure A 1382.2 Ethanol 8mL Pentanol-3 80µL (Gives a concentration of approx. 8mg/mL) Price on request 93717 Pesticide Standard Price on request 1767.16-10MG 1-Aminopyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1606-67-3 Price on request