Bisphenol B, 100 µg/ml, Acetonitrile, 1ml

Caffeine-d3 (1-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 26351-03-1

5 alpha(H)-Cholestan-3 alpha-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 516-95-0

2,2,3,4,5-Pentachlorobiphenyl (BZ-90)