英文别名O-Desmethyl Venlafaxine Impurity 1; 4-(3-Methyl-1-oxa-3-azaspiro[5.5]undec-5-yl)phenol; Venlafaxine Impurity 9; O-Desmethyl Venlafaxine Cyclic Impurity; Venlafaxine Impurity 10; 5-(4-Hydroxyphenyl)-3-Methyl-1-oxa-3-azaspiro[5.5]undecane; Venlafaxine O-Desmethyl Cyclic Impurity; O-desmethylvenlafaxine cycle impurities; Desvenlafaxine Cyclic Impurity 
