stryphnic

from The Century Dictionary.

• Noting an acid, a pale-yellow compound, C₄H₃O₂N₅, prepared by the action of potassium nitrite and acetic acid on uric acid. It forms granular crystals.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Chem.) Pertaining to, or designating, a complex nitrogenous acid, obtained by the action of acetic acid and potassium nitrite on uric acid, as a yellow crystalline substance, with a bitter, astringent taste.