Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Canadian Journal of Chemistry called Photochemistry of matrix-isolated 5-cyano-2H-pyran-2-one (δ-cyano-α-pyrone) and cyanocyclobuta-1,3-diene, Author is Menke, Jessica L.; McMahon, Robert J., which mentions a compound: 1195-58-0, SMILESS is N#CC1=CC(C#N)=CN=C1, Molecular C7H3N3, COA of Formula: C7H3N3.
Matrix-isolation photochem. (λ > 299 nm; Ar, 10 K) of 5-cyano-2H-pyran-2-one (5, δ-cyano-α-pyrone) shows complete conversion to a mixture of several ring-opened ketene isomers (6) and a ring-closed Dewar lactone (7), as detected by IR spectroscopy. Subsequent irradiation (λ > 200 nm) causes decarboxylation of the Dewar lactone (7) to produce cyanocyclobuta-1,3-diene (8). Continued irradiation (λ > 200 nm) results in the photodecomposition of cyanocyclobuta-1,3-diene (8) to cyanoacetylene and acetylene. 4-Cyanopyridine (10) was explored as an alternative photochem. precursor to cyanocyclobuta-1,3-diene (8). It was found, however, that 10 does not exhibit observable photochem. under our irradiation conditions.
Compounds in my other articles are similar to this one(Pyridine-3,5-dicarbonitrile)COA of Formula: C7H3N3, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts