Acetonitrile-1,2-13C2,2000 µg/mL,MeOH,1mL,

MOTE,neat,neat,10mg,

(2R,3R)rel2,3Dihydroxy-2-methylbutanoic Acid,500mg

1-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml