Chemistry is traditionally divided into organic and inorganic chemistry. COA of Formula: C4H2ClNO2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 62348-13-4
(Chemical Equation Presented) A “one-pot” method for the synthesis of N-(1,3-diphenyl-1H-pyrazol-5-yl)amides was developed by cyclization of benzoylacetonitrile (1) and phenylhydrazine in neat condition followed by acylation. The corresponding N-(1,3-diphenyl-1H-pyrazol-5-yl)amides were provided in good to excellent yields (70-90%). The significant advantages of the new synthetic method are excellent yields and simple work-up procedure without isolation and purification of intermediary 5-amino-1,3-diphenyl pyrazol (2).
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem