Para xanthin

(par-ak-zan’ ’-thin) [rcapd, beyond; Zavdog, yellow], C7H8N+02. Dimethyl xanthin, a crystalline leukoma in occurring in normal urine, and isomeric with theobromin, which it resembles in its action upon the organism, producing muscular rigidity, bility. dyspnea, and diminution in reflex excita- 479