3.2.2.8	a pyrimidine nucleoside + H2O	
3.2.2.8	additional information	
3.2.2.8	N-D-ribosylpyrimidine	
3.2.2.8	N-ribosylpurine + H2O	
3.2.2.8	N-ribosylpyrimidine + H2O