Ribonucleic acid. See

Riboflavin, riboflavin-5 -phosphate (Na salt, 2H2O) and ribonucleic acid see entries in Chapter 6. 

Cy tidy lie Acid. Cyridine-3 -monophosphate cytidylic acid b 3 -cytidinephosphoric acid cytidine-3 -phosphate 3 -cytosylic acid 3 -CMP, CjH NjOjP mol wt 323.19. C 33.44% H 4-37%, N 13.00%, O 39-61%. P 9 58% Ribonuclease inhibitor. Prepn from yeast ribonucleic acid see refs under 2 -Cytidylic Acid. Prepn by pancreatic-ribonuclease-catalyzed ring opening of dicyclohexy] -guanidinium cytidine 2 ,3 -cyclic phosphate Lohrmann,... 

D-Ribonic acid, esters D-psicosides from, 272 Ribonucleic acid. See RNA Ring cleavage electrocyclic (cycloreversion) [l+l-i- 2]- double CO elimination, 78, 339 [1 + 4]- CO elimination, 337 S02 elimination, 80,153 [2 + 2]- benzene elimination, 331, 332-333 prismane opening, 330-331 rhodium( 1 + )-catalysed, 332 thermal, 79-80... 

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