Synonym(s): 1,1-Diphenyl-2-picrylhydrazyl radical; 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl; DPPH Formula: C₁₈H₁₂N₅O₆ Formula Weight: 394.32 CAS No.: 1898-66-4 Other Notes: Free radical Storage: 2-8°C …