1,3-Dimethyl-4-ethylcarbostyril 15112-97-7 2(1H)-Quinolinone, 1,3-dimethyl-4-ethyl- Carbostyril, 1,3-dimethyl-4-ethyl- Carbostyril, 4-ethyl-1,3-dimethyl- NSC142458 WLN: T66 BNVJ B1 D1 E2