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