Scoville scale
Like capsaicin, it is an irritant. Nordihydrocapsaicin accounts for about 7% of the total capsaicinoids mixture and has about half the pungency of capsaicin. Pure nordihydrocapsaicin is a lipophilic colorless odorless crystalline to waxy compound. On the Scoville scale it has 9,100,000 SHU ("Scoville heat units"), significantly higher than pepper spray.