Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml Back Catalog number: CLM-4590-MT-1.2 Availability: In the manufacturer's stock Price on request - + Recommended EPA-513ISS Internal Standard Spiking Solution, 1.2ml, nonane Price on request 96548 EDDP-D3.perchlorate Price on request 96579 Hydrocortisone Price on request