In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Highly regioselective conversion of epoxides to β-hydroxy nitriles using metal(II) Schiff base complexes as new catalysts under mild conditions, published in 2013-01-25, which mentions a compound: 17190-29-3, mainly applied to hydroxy nitrile preparation; regioselective ring opening epoxide metal Schiff base catalyst, COA of Formula: C9H9NO.
Epoxides undergo efficient ring opening with potassium cyanide in acetonitrile in the presence of metal Schiff base complexes as catalysts. This method was carried out under neutral and mild conditions with both high yields and high regioselectivity within a short period of time. Thus, several β-hydroxy nitriles, useful intermediates for the synthesis of biol. active mols., were easily obtained at room temperature
There are many compounds similar to this compound(17190-29-3)COA of Formula: C9H9NO. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics