N-Nitroso-L-proline

1,2,3,8,9-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

o-Aminoazotoluene, 100 µg/ml, Acetonitrile, 1ml

Dibenzo[bc,ef]coronene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 190-31-8