140.5
[1]. Kadokura M. Synthesis of 4-thiouridine, 6-thioinosine, and 6-thioguanosine ,5-O-bisphosphates as donor molecules for RNA ligation and their application to the synthesis of photoactivatable TMG-capped U1 snRNA fragments. J Org Chem. 2000 Aug 25;65(17):54-1.
H02-H15-H1
P264-P270-P280-P02+P52-P05+P51+P8-P0-P62+P64-P501