Internal Standard

2,2',3,3',4,4',5',6-Octachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 42740-50-1

4-n-Nonylphenol, 100 µg/ml, Acetonitrile, 1ml

Sodium DL-3-hydroxybutyrate-3,4,4,4-d4