Flupyrsulfuron-methyl, 100 µg/ml, Acetonitrile,

GC-IRMS Standards (C11(?13C: -26.11); C15 (?13C: -30.22); C20 (?13C: -33.06)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no.

EPA Method 551.1 Surrogate Standard

Mitragynine-d3, 1mg