Levonorgestrel, 100µg/mL in Acetonitrile, 1ml Back Catalog number: A14629760AL-100 Availability: In the manufacturer's stock Price on request - + Recommended 681951 Quintozene, 100 µg/ml, Cyclohexane, 1ml Price on request 10123.12-50-IO 3,3',4,5,5'-Pentabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 81902-33-2 Price on request 94447 8270 Spike Standard Price on request