Disulfoton-sulfoxide, certified, 50mg

EPA Method 537 Analyte Primary Dilution Standard (linear isomers only), 1.2ml, methanol

n-Tridecane, ?13C: -33.47, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-50-5

Aceanthrenequinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 6373-11-1