Urea

1,2,3,4-Tetrahydronaphthalen-2-amine hydrochloride, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2954-50-9 (free base)

Simazin, 100μg/ml in Acetonitrile, 5ml

Pentachlorphenol-13C6, 100µg/ml in MeOH, 1ml