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 2828.16-50-ME Perfluorohexadecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 67905-19-5 Price on request 79605 2,4,6-Trichloroanisole Price on request 11412.17-K-ME Doxylamine succinate,1000 µg base/mL,MeOH,1mL, Price on request