7-Chloro-2H-3,1-benzoxazine-2,4(1H)-dione4-氯靛红酸酐4-Chloroisatoic anhydride7-氯-2H-3,1-苯并噁嗪-2,4(1H)-二酮7-Chloro-2H-3,1-benzoxazine-2,4(1H)-dione7-Chloroisatoic anhydride7-氯靛红酸酐7-Chloro-1H-benzo[d][1,3]oxazine-2,4-dione7-chloro-2,4-dihydro-1H-3,1-benzoxazine-2,4-dione