Arsonic acid, [4-[[(2-amino-1H-purin-6-yl)thio]azo]phenyl]- Benzenearsonic acid, p-[[(2-aminopurin-6-yl)thio]azo]- NSC79193 [4-[[(2-AMINO-1H-PURIN-6-YL)THIO]AZO]PHENYL]ARSONIC ACID