5-Methyluridine

Synonym(s):Ribothymidine

CAS NO.：1463-10-1
Empirical Formula: C10H14N2O6
Molecular Weight: 258.23
MDL number: MFCD00006535
EINECS: 215-973-9
SAFETY DATA SHEET (SDS)
Update Date: 2026-07-17 09:03:53

What is 5-Methyluridine?

Description

5-Methyluridine is a pyrimidine nucleoside and methylated form of uridine. It is the ribonucleoside counterpart to the deoxyribonucleoside thymidine, which lacks a hydroxyl group at the 2' position. 5-Methyluridine contains a thymine base joined to a ribose pentose sugar. It is an endogenous methylated nucleoside found in human fluids. In cells, 5-methyluridine is present in tRNA, formed during its post-transcriptional modification by the methylation of uridine.

Chemical properties

White Powder

The Uses of 5-Methyluridine

A primary degradation product of tRNA, an urinary nucleoside as biological marker for patients with colorectal cancer.
It enhances the antitumor activity of 5-fluorouracil in a mouse Erlich solid carcinoma model and a P388 murine leukemia model. It has been used to characterize the activity of a variety of enzymes, including uridine nucleosidase.

Definition

ChEBI: Ribothymidine is a methyluridine having a single methyl substituent at the 5-position on the uracil ring. It has a role as a human metabolite, an Escherichia coli metabolite and an antigen.

Properties of 5-Methyluridine

Melting point:	183-184 °C(lit.)
Density	1.576±0.06 g/cm3(Predicted)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
solubility	Methanol (Slightly, Heated, Sonicated), Water (Sparingly, Sonicated)
pka	9.55±0.10(Predicted)
form	powder
color	white
InChI	InChI=1S/C10H14N2O6/c1-4-2-12(10(17)11-8(4)16)9-7(15)6(14)5(3-13)18-9/h2,5-7,9,13-15H,3H2,1H3,(H,11,16,17)/t5-,6-,7-,9-/m1/s1
CAS DataBase Reference	1463-10-1(CAS DataBase Reference)

Safety information for 5-Methyluridine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.