1,1'-(1,2-Ethynediyl)bis(2-nitrobenzene) 25407-11-8 3-05-00-02121 (Beilstein Handbook Reference) Acetylene, bis(o-nitrophenyl)- BRN 1998894 Benzene, 1,1'-(1,2-ethynediyl)bis(2-nitro- Dinitro-2,2' tolane [French]