2,2',4,4'-Tetrahydroxybenzophenone, 500mg

Theophylline,1000 µg/mL,MeOH,1mL,

Spinetoram, 100 µg/ml, Acetonitrile, 1ml

3,4,5-Trichloro[13C6]phenol, 1.2ml x 100ug/ml, isooctane