Levonorgestrel, 100µg/mL in Acetonitrile, 1ml Back Catalog number: A14629760AL-100 Availability: In the manufacturer's stock Price on request - + Recommended 8715.9-100-IO Anilazine-d4 (ring-d4), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1219802-20-6 Price on request 71854 Benzo(c)phenanthrene Price on request 9058.7-K-IP 4,5,6-Trichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2668-24-8 Price on request