
%0 Journal Article
%A Brown, DJ 
%A Lyall, M 
%T The Fine Structure of Cytosine
%J Australian Journal of Chemistry
%D 1962/12/01
%V 15
%N 4
%P 851-857
%K 
%R https://doi.org/10.1071/CH9620851
%U https://www.publish.csiro.au/paper/CH9620851 
%X The ionization constants and ultraviolet spectra of cytosine, of its appropriately methylated derivatives, and of related compounds are used to indicate that its pre- dominant tautomeric form in aqueous solution is 4-amino-1,2-dihydro-2-oxopyrimidine. This is in sharp contrast to its recent formulation as a zwitterion on the grounds of its nuclear magnetic resonance spectrum. 
