英文别名(R)-6-(BENZYLOXY)-8-(2-CHLORO-1-HYDROXYETHYL)-2H-BENZO[B][1,4]OXAZIN-3(4H)-ONE; 8-[(1R)-2-chloro-1-hydroxyethyl]-6-phenylmethoxy-4H-1,4-benzoxazin-3-one; 2H-1,4-Benzoxazin-3(4H)-one, 8-[(1R)-2-chloro-1-hydroxyethyl]-6-(phenylmethoxy)-; Olodaterol Impurity 7; Odatero Impurity 9