Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C5H7NO2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 35166-33-7
The present invention relates to compounds of formula (I) [Chemical formula should be inserted here. Please see paper copy] as well as pharmaceutically acceptable salts and pharmaceutical compositions including the compounds are prepared or thereof: wherein, A1, A2, R1, R2, R3, R4, and R5 and n are as defined in the specification. The compounds of formula (I) are useful in therapy.
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem