| | Identification | Back Directory |  | [Name] 
 3-OXO-3,4-DIHYDROPYRAZINE-2-CARBONITRILE
 |  | [CAS] 
 81411-78-1
 |  | [Synonyms] 
 Favipiravir Impurity 26
 3-hydroxypyrazine-2-carbonitrile
 1,2-Dihydro-2-oxo-3-pyrazinecarbonitrile
 3-Oxo-3,4-dihydro-2-pyrazinecarbonitrile
 3-OXO-3,4-DIHYDROPYRAZINE-2-CARBONITRILE
 |  | [Molecular Formula] 
 C5H3N3O
 |  | [MDL Number] 
 MFCD10697786
 |  | [MOL File] 
 81411-78-1.mol
 |  | [Molecular Weight] 
 121.1
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 192-194℃
 |  | [density ] 
 1.38
 |  | [pka] 
 9.66±0.40(Predicted)
 |  | [InChI] 
 InChI=1S/C5H3N3O/c6-3-4-5(9)8-2-1-7-4/h1-2H,(H,8,9)
 |  | [InChIKey] 
 RDCUCJMNMLUNLB-UHFFFAOYSA-N
 |  | [SMILES] 
 C1(C#N)=NC=CNC1=O
 | 
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