Uridin and Cytidin Phosphoric Acid. 



23 



OH\ 



0 = P— C 5 H804.C5H 4 N 5 0 



oh/ 



OH\ 

 OH/ 

 OH\ 

 OH/ 



OH\ 



0==P— C 5 H 8 0 4 .C 4 H 4 N 3 0 



OH\ 



O- = P— C 5 H 8 0 4 .C4H 3 N 2 02 



-3H 2 0 



OH\ 



0 = P— C5H3O4.C5H.N5 

 OH/ 



The barium salt of uriclin-phosphoric acid had the following 

 composition : 



Calculated. 

 FOR C9H11N2O9PBA. 



Found. 



I. 



II. 



c 



23-50 

 2.41 

 6.10 



6.75 

 29.90 

 48.97 



23-05 

 2.64 

 6.17 



6.17 

 6.82 

 29.47 



H 



N 



p 



Ba 





BazPjO? 



49.02 





The specific rotation in 2.5 per cent. HC1 was 



Q.I4 X 100 o 

 D 1X4 3 ° ' 



On hydrolysis of the nucleotide the base uracil was obtained. 

 It had the following composition : 



Found. 



Calculated. 

 For C4H4N2O2. 

 N = 25.05 



24.88 



The barium salt of cytidin-phosphoric acid had the following 

 composition : 



Calculated. 

 For C9H12N3O8PBA. 



C 23.56 



H 2.64 



N 9.16 



P 6.77 



Ba 29.96 



Ba 2 P207 48.97 



Found. 



23-71 

 2-55 

 9-39 

 6-43 

 29.36 

 48.79 



