In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Furan derivatives. XLVI. Infrared spectra of substituted 2-furyl cyanides, published in 1975, which mentions a compound: 2689-65-8, Name is 5-Iodo-2-furaldehyde, Molecular C5H3IO2, COA of Formula: C5H3IO2.
The spectral data of the cyanides I (R = H, halo, Me, NO2, AcO) in CHCl3 and CCl4 were given and the influence of substituents and solvents on the wave numbers and integrated absorption intensities of the ν(CN) bands discussed. Wave numbers of the ν(CN) bands increased with increasing electron-acceptor ability of the substituents; the wave numbers were higher than those of the corresponding substituted Ph cyanides. Integrated absorption intensities of the ν(CN) bands decreased with increasing electron-acceptor ability of the substituents and were more significantly influenced by the nature of the substituents and the polarity of the solvents than the wave numbers of these bands.
From this literature《Furan derivatives. XLVI. Infrared spectra of substituted 2-furyl cyanides》,we know some information about this compound(2689-65-8)COA of Formula: C5H3IO2, but this is not all information, there are many literatures related to this compound(2689-65-8).
Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem