Internal Standard Spiking Solution, 1.2ml, nonane

(1S,2R,3S,4S)-rel-1,2,3,4-Tetrahydro-1,2,3,4-chrysenetetrol, , Solvent-, Unit , # of units-, Cas.no. 79356-06-2 (Unspecified sterochemistry)

Betamethasone, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 378-44-9

1,2,3,4,7,8,9-Heptachlorodibenzofuran