N,N-Dimethylaniline, certified, 250mg

2,3,4,4'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Phenkapton, 10.0 µg/ml, Acetonitrile, 10ml

Levonorgestrel, 100µg/mL in Acetonitrile, 1ml