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Old 05-20-2014, 11:10 PM
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Default Chemical shift

Chemical shift

Hi there,I am seeing four signals at equal height between -0.6 and 0.5 PPM of a 1H NMR sample in dmso-d6. The reaction involves a reductive amination of a heterocylic aldehyde and a primary amine with NaCNBH3.Any thoughts.., appreciated.



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