Levonorgestrel, 100µg/mL in Acetonitrile, 1ml

Stock Standard #4

4-n-Butyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 147792-33-4

1,2-Dinitrobenzene, 1000µg/ml in MeOH, 1ml