Purified asfalthenes from North Sea Oil,neat,neat,100mg,

n-Tetracontane, ?13C: -27.05, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 4181-95-7

Cerotic acid, 100 µg/ml, Acetonitrile, 1ml

2,2’,3,3’,4,4’,5,5’-Octachlorobiphenyl (194)