1,2,3,4-Tetrahydronaphthalene, certified, 50mg

C29 Ring-C Monoaromatic sterane (5ß(H),10ß(CH3)/5 alpha(H),10 alpha(CH3)), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 205176-21-2 / 81943-51-3

Melamine-13C3,15N3, 1mg

Difloxacin hydrochloride, 100mg