EPA Method 548 Calibration Solution

3-Methyl-4-nitroanisole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 5367-32-8

N-Propionyl mesalazine-d5, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

a,a’-Dibromo-m-xylene