SMILES: C1=CC=C(C=C1)C2=NC3=C(N=C(N=C3N=C2N)N)N
Description: The molecule is pteridine substituted at positions 2, 4 and 7 with amino groups and at position 6 with a phenyl group. A sodium channel blocker, it is used as a diuretic in the treatment of hypertension and oedema. It has a role as a diuretic and a sodium channel blocker.