2,4(1H,3H)-Pyrimidinedione,6-chloro-3-methyl- , its cas register number is 4318-56-3. It also can be called 6-Chloro-3-methyluracil ; 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione ; and 3-Methyl-6-chlorouracil .