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 Synthesis, antioxidant and antitumor activities of some of new cyclobutane containing triazoles derivatives, published in 2019, which mentions a compound: 3326-71-4, Name is 2-Furoic hydrazide, Molecular C5H6N2O2, Formula: C5H6N2O2.
Thiosemicarbazides were obtained by the interaction of furan-2-carboxylic acid hydrazide with five different isothiocyanate (RNCS) derivatives By addition of KOH to the reaction medium, 1,2,4-triazoles derivatives I [R = Et, allyl, Ph, benzyl, 4-MeC6H4] were obtained. Compounds I were dissolved in dry acetone containing K2CO3 in the presence of 2-chloro-1-(3-methyl-3-mesitylcyclobutyl)ethanone to give 3,4,5-trisubstituted 1,2,4-triazole sulfanyl compounds II. The structures of the final compounds were confirmed by elemental analyses, FT-IR, 1H-NMR and 13C-NMR. The antioxidant and antitumor properties of the synthesized compounds were also investigated. Three of the triazole derivatives II [R = Ph, benzyl, 4-MeC6H4] displayed good antioxidant and antitumor activity in comparison to the standards
Compounds in my other articles are similar to this one(2-Furoic hydrazide)Formula: C5H6N2O2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics