購(gòu)物車(chē) 
1,3,4-惡二唑|1,3,4-Oxadiazole
1,3,4-惡二唑是一種含氮和氧的雜環(huán)，是惡二唑的四個(gè)異構(gòu)體之一，是用用的中間體。1,3,4-Oxadiazole is a thermally stable neutral aromatic molecule. Other aromatic systems are 1,3,4-oxadiazolium cations and the exocyclic-conjugated mesoionic 1,3,4-oxadiazoles and 1,3,4-oxadiazolines . Also known are derivatives of the non-aromatic reduced systems, 2,3-dihydro-1,3,4-oxadiazole (Δ2-1,3,4-oxadiazoline; 5), 2,5-dihydro-1,3,4-oxadiazole (Δ3-1,3,4-oxadiazoline; 6) and 2,3,4,5-tetrahydro-1,3,4-oxadiazole (1,3,4-oxadiazolidine; 7).
