(R,R)-Chloramphenicol,neat,neat,250mg,

Phenylacetylglutamine, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no.

2,2'-Dichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

EPA Method 551.1 Performance Check Soln