英文别名Carvedilol Impurity 23; 1,2,3,4a,9,9a-hexahydrocarbazol-4-one; 2,3,9,9a-tetrahydro-1H-carbazol-4(4aH)-one; 1,2,3,4-tetrahydro-4-oxo-carbazole; 1,2,3,4-TETRAHYDRO-9H-CARBAZOLE-4-ONE; 1,2,3,4-TETRAHYDRO-4H-CARBAZOLE-4-ONE; 1,2,3,9-TETRAHYDRO-9[H]-CARBAZOLE-4-ONE; 4-OXO-1,2,3,4-TETRAHYDROCARBAZOLE; 2,3-Dihydro-1H-carbazol-4(9H)-one 
