英文同义词: | Butalbital Impurity 1;5,5-diisobutyl-pyrimidine-2,4,6-trione;5,5-Diisobutylbarbituric acid;2,4,6(1H,3H,5H)-Pyrimidinetrione, 5,5-bis(2-methylpropyl)-;Butalbital Impurity 5;(-)-3-oxo-6-beta-t.-butyldimethylsilyloxymethyl-7-alpha-benzoyloxy-2-oxabicyclo[3.3.0]octan |