in addition to orotic acid , allantoin , and uric acid , the free bases hypoxanthine , xanthine , and guanine , the ribonucleosides uridine , cytidine , and pseudouridine , and the ribonucleotides , guanosine 5'-monophosphate and cytidine 5'-monophosphate , were quantified in milk samples of holstein-friesian cows .
C0041984
uridine
C0033846
pseudouridine