Roxithromycin-d7, 2,5mg

n-Dodecylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1795-17-1

Ethylene glycol mono(4-n-nonylphenyl) ether-13C6, 10µg/ml, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 1346600-52-9

Di-n-butyl phthalate, >99%, 25g