2-Methylheptane

Demeton-S-methyl-sulfoxide, certified, 25mg

Heptachlor-exo-epoxide (Iso B) 10µg/mL in CY, 10ml

Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml