| | Identification | Back Directory |  | [Name] 
 4-Aminoisoxazole
 |  | [CAS] 
 108511-97-3
 |  | [Synonyms] 
 4-Aminoisoxazole
 Isoxazol-4-ylamine
 1,2-oxazol-4-aMine
 |  | [Molecular Formula] 
 C3H4N2O
 |  | [MDL Number] 
 MFCD08234629
 |  | [MOL File] 
 108511-97-3.mol
 |  | [Molecular Weight] 
 84.08
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 130-135 °C (decomp)
 |  | [Boiling point ] 
 234.7±13.0 °C(Predicted)
 |  | [density ] 
 1.241±0.06 g/cm3(Predicted)
 |  | [storage temp. ] 
 Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
 |  | [pka] 
 1.88±0.10(Predicted)
 |  | [InChI] 
 InChI=1S/C3H4N2O/c4-3-1-5-6-2-3/h1-2H,4H2
 |  | [InChIKey] 
 CVCYZCBJCQXUCN-UHFFFAOYSA-N
 |  | [SMILES] 
 O1C=C(N)C=N1
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 4-Aminoisoxazole is a versatile reactant used in the design and synthesis of hydroxyethylene-based HIV-1 protease inhibitor containing a heterocyclic P1''-P2'' amide bond isostere. It is also used in the development of pyrimidine derivatives as JAK3 inhibitors.
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