4H-1,4-BENZOXAZIN-3-ONE, 2,3-DIHYDRO-6-CHLORO-4-(2-DIMETHYLAMINOETHYL)-2-METHYL- 4H-1,4-Benzoxazin-3-one, 2,3-dihydro-6-chloro-4-(2-dimethylaminoethyl)-2-methyl-, hydrochloride 57462-61-0