D5-threo-Chloramphenicol, 2mg

trans-1,4-Dimethylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 2207-04-7

Ribitol-1,2,3,4,5-13C5, 5mg

Diisohexyl phthalate (Technical grade)