Rifampicin, 100mg

2,2',3,3',4,5,5',6-Octachloro-4'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

n-Pentacosane-d52, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 121578-13-0

(13C10)Heptachlor, 1.2mL x 100ug/mL, nonane