Chemistry is traditionally divided into organic and inorganic chemistry. Computed Properties of C19H17NO5, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 78967-07-4
A compound of the formula (I), wherein R1 is hydrogen, halogen, carbymoyl, cyano, formuly, or lower alkyl optionally substituted with halogen, amino or a protected amino, R2 is hydrogen, halogen, cyano or lower alkoxy, R3 is phenyl or pyridyl, each of which is substituted with lower alkoxy, and R4 is lower alkoxy; provided that either R1 or R2 is hydrogen, then the other is other than hydrogen, or its salts, which are useful as a medicament.
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem