Metamitron, 100 µg/ml, Acetonitrile, 5ml

GC-IRMS Standards (C11(?13C: -26.11); C15 (?13C: -30.22); C20 (?13C: -33.06)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no.

4-tert-Butyltoluene

1,2-Bis(pentabromophenyl)ethane [13C14], 1.2ml x 25ug/ml, toluene