.DELTA.2-1,3,4-Oxadiazolin-5-one, 2-(5-nitro-2-furyl)- 1,3,4-Oxadiazol-2(3H)-one, 5-(5-nitro-2-furanyl)- 1,3,4-Oxadiazole-2-ol, 5-(5-nitro-2-furyl)- 2122-86-3 NSC25249 WLN: T5OJ BNW E- CT5NN DOJ EQ