13C6-Mefenamic acid, 10mg

Mono-ethyl phthalate (ring-1,2-13C2,99%, dicarboxyl-13C2,99%) 100 µg/mL in MTBE

Isofenphos, 100 µg/ml, Ethyl acetate, 5ml

Acifluorfen-methyl, 10.0 µg/ml, Acetonitrile, 10