Cytidine 3 : 5 -cyclic phosphate

C9H11N307P-,Na+,2 H20 Sodium cytidine 2, 3 -cyclic phosphate, dihydrate (CYTCYP20)285... 

The most commonly used assay procedures today are based on commercial yeast RNA or on cytidine-2 3 -cyclic phosphate, C>p, as substrates. 

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,... 

In an early paper, Shinkai et al. celebrate the first man-made catalyst for the regioselective cleavage of ribonucleoside 2, 3 -cyclic phosphate. At pH 2, the well known parent calix[4]arene tetrasulfonate was shown to cleave the P-O (2 ) bond of cytidine 2, 3 -cyclic phosphate. This outcome was rationalized by formation of a network of largely ionic hydrogen bonds between the calixarene anion and the protonated nucleotide [83]. 

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