2H-3,1-Benzoxazine-2,4(1H)-dione,8-methyl- , with CAS number of 66176-17-8, can be called 3-Methyl-isatoic anhydride ; 8-methyl-1h-benzo[d][1,3]oxazine-2,4-dione ; 8-methyl-2H-3,1-benzoxazine-2,4(1H)-dione .