EPA Method 8270C - B/N Matrix Spiking Solution

Dexamethasone-4,6alpha,21,21-d4,neat,neat,1mg

Heptafluorobutyric anhydride, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 336-59-4

Caffeine-d3 (1-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 26351-03-1