5’CMPS (5’-O-Thiophosphonocytidine) is a 5’-CMP analog that is a potential competitive inhibitor or regulator of enzymes that interact with cytidine 5’phosphate[1].
References
[1] Basu S, et al. Analysis of ribozyme structure and function by nucleotide analog interference mapping. Methods Mol Biol. 2004;252:57-75. DOI:10.1385/1-59259-746-7:057