药物信息为Lufyllin Tablets (dyphylline tablets, USP, 200 mg) Lufyllin -400 Tablets (dyphylline tablets, USP, 400 mg) IN-0521-11 Rev. 1/09 (Meda Pharmaceuticals Inc.): Description

LUFYLLIN (dyphylline), a xanthine derivative, is a bronchodilator available for oral administration as tablets containing 200 mg and 400 mg of dyphylline. Other ingredients: magnesium stearate, microcrystalline cellulose.

Chemically, dyphylline is 7-(2,3-dihydroxypropyl)-theophylline, a white, extremely bitter, amorphous powder that is freely soluble in water and soluble in alcohol to the extent of 2 g/100 mL. Dyphylline forms a neutral solution that is stable in gas­trointestinal fluids over a wide range of pH.

The molecular formula for dyphylline is C₁₀H₁₄N₄O₄ with a molecular weight of 254.25. Its structural formula is: