Pseudouridine (abbreviated by the Greek letter psi- Ψ) is an isomer of the nucleoside uridine in which the uracil is attached via a carbon-carbon instead of a nitrogen-carbon glycosidic bond. It is the most prevalent of the over one hundred different modified nucleosides found in RNA. Ψ is found in all species and in many classes of RNA. Ψ is formed by enzymes called Ψ synthases, which post-transcriptionally isomerize specific uridine residues in RNA in a process termed pseudouridylation.

CAS：1445-07-4
中文别名：5-Β-D-核呋喃基尿嘧啶;
英文别名：β-Pseudouridine;β-PSEUDOURIDINE;
分子式：C9H12N2O6
分子量：244.201
精确质量：244.07
Psa：135.64
Logp：-2.7828

密度：1.641g/cm3
沸点：598.4ºC at 760mmHg
闪点：315.7ºC
折射率：1.623
蒸汽压：3.63E-15mmHg at 25°C