20844-48-8

3-(3-Nitrophenyl)-5-phenyl-1,2,4-oxadiazole is a PEG derivative containing a tert-butyl ester and an azide group[1].

[1] Sasaki T, et al. Studies of Heteroaromaticity. XXXII. New Synthesis of 1, 2, 4-Oxadiazoles, Benzoxazoles, Benzothiazoles and Benzimidazole from Aromatic Hydroxamoyl Chlorides[J]. Bulletin of the Chemical Society of Japan, 1969, 42(11): 3335-3338.