Chemistry is traditionally divided into organic and inorganic chemistry. name: 5-Methylisoxazol-3-amine, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1072-67-9
The invention relates to the novel 4-oxo-azetidine-2-sulfonic acid amides and their salts of the formula I STR1 wherein the radicals have the meanings: R1 =hydrogen, halogen; R2 =hydrogen, halogen, NH2, C6 H5 CH2 CONH, C6 H5 OCH2 CONH, phthalimido, o-MeNHCOC6 H4 CONH, isoxazolylcarbonylamino; R3 =hydrogen, Me2 C=C–COOMe, H2 C=C(Me)–CH–COOMe, Me2 C=C–COOCH2 C6 H5, H2 C=C(Me)CH–COOCH2 C6 H4 NO2 -p, Me2 C=C–COOCH2 C6 H4 NO2 -p, Me2 C=C–COOCH2 C6 H4 Me-m, H2 C=C(Me)–CH–COOCH2 C6 H4 Me-m, Me2 C=C–COOH; R4 =hydrogen or sodium and R5 =hydrogen, alkyl, benzyl or heterocycle, i.e. isoxazole or pyrazole etc. The invention also relates to the procedure for the preparation thereof and the use thereof as intermediates in the synthesis of beta-lactam analogs or as active components for the preparations of the drugs for antimicrobial therapy.
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem