1,3,4-Oxadiazol-2(3H)-one, 5-(4-amino-2-hydroxyphenyl)- (9CI) 2-(4-Amino-2-hydroxyphenyl)-delta(sup 2)-1,3,4-oxadiazolin-5-one 2576-97-8 5-(4-Amino-2-hydroxyphenyl)-1,3,4-oxadiazol-2(3H)-one WS 127 delta(sup 2)-1,3,4-OXADIAZOLIN-5-ONE, 2-(4-AMINO-2-HYDROXYPHENYL)-