d4 C27 alpha alpha alpha (20R)-Cholestane

Dibenz[a,h]anthracene-d14, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 13250-98-1

2,4-D (13C6, 99%) 100µg/mL in Acetonitrile, 1,2ml

2,2',3,4,4',5,5'-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane