Elguero, Jose published the artcileStudies on the azole series. Part 101. Determination by fluorine-19 NMR spectroscopy of the σ1 and σ0R parameters of N-substituted azoles, Quality Control of 57103-14-7, the publication is Journal of Chemical Research, Synopses (1981), 364-5, database is CAplus.
N-(m– And p-Fluorophenyl)-substituted heterocyclic compounds, including pyrroles and triazoles, were prepared and their 19F NMR were observed The 19F chem. shifts were used to calculate the σI and σ0R substituent constants using equations derived empirically from substituted fluorobenzenes with known substituent constants
Journal of Chemical Research, Synopses published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, Quality Control of 57103-14-7.
Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem