NSC125089 Urea, 1-(2-chloroethyl)-3-[.alpha.-(1,6-dihydro-6-oxo-9H-purin-9-yl)-p-tolyl]-1-nitroso- Urea, N-(2-chloroethyl)-N'-[4-[(1,6-dihydro-6-oxo-9H-purin-9-yl)methyl]phenyl]-N-nitroso-