1,2-Benisoxazole-2(3H)-carboxylic acid, 5-bromo-3-oxo-, ethyl ester 5-Bromo-2-etoksykarbonylobenzoizoksazolinon-3 [Polish] 70964-70-4 BRN 1121917 Ethyl 5-bromo-3-oxo-1,2-benisoxazole-2(3H)-carboxylate