Roxithromycin-d7, 2,5mg

2-(4-[Methylsulfonyl]phenyl)-1H-benzimidazole, neat, Solvent-neat, Unit 10MG, # of units-22, Cas.no. 143426-39-5

24-Ethylcholest-5-en-3ß-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 83-46-5

Ethynylestradiol (20,21-13C2,99%) 100 µg/mL in Acetonitrile, 1,2ml