SEARCH Articles Figures Tables 2-Pyrazinecarbaldehyde 2-Pyrazinecarbaldehyde 3 - Amino-5 -phenyl-2-pyrazinecarbaldehyde 3-Methoxy-2-pyrazinecarbaldehyde 3-Methylthio-2-pyrazinecarbaldehyde Pyrazinecarbaldehydes oxidation Pyrazinecarbaldehydes reduction