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5-Ethynyluridine (5-EU) - ≥99% , CAS No.69075-42-9

CAS: 69075-42-9 Cat. No.: E276476 Molecular Weight: 268.22
COA
5-Ethynyluridine (5-EU) - ≥99% CAS No(69075-42-9) by Aladdin Scientific
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
5-EU | AKOS024462949 | 5-ethynyl uridine | DS-8002 | EX-A3665 | GLXC-25273 | AC-32359 | QCWBIPKYTBFWHH-FDDDBJFASA-N | 1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-ethynylpyrimidine-2,4-dione | 5-Ethynyl Uridine (EU) | C76184 | Uridine, 5
Storage
Protected from light,Store at -20°C,Argon charged,Desiccated
Shipped In
Ice chest + Ice pads
★
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
10mg
E276476-10mg
5
$9.90
100mg
E276476-100mg
2
$58.90
250mg
E276476-250mg
2
$109.90
1g
E276476-1g
2
$336.90
Enter a quantity for the sizes you want to add.
Bulk / Custom
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SDS
Safety data
COA
Certificate
DS
Datasheet
SP
Spec sheet
Overview Specifications Names and Identifiers Documentation Advanced Data 3D Structure Associated Targets(non-human) Mechanisms of Action Certificates（CoA,COO,BSE/TSE and Analysis Chart) Chemical and Physical Properties Documents & Articles Solution Calculators Reviews
🧪

Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Protected from light,Store at -20°C,Argon charged,Desiccated Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Store at -20°C. Store In the Dark. Store under desiccating conditions. This product is air and light sensitive and impurities can occur as a result of air oxidation or due to metabolism by microbes.

Specifications

Synonyms
5-EU | AKOS024462949 | 5-ethynyl uridine | DS-8002 | EX-A3665 | GLXC-25273 | AC-32359 | QCWBIPKYTBFWHH-FDDDBJFASA-N | 1-[(2R, 3R, 4S, 5R)-3, 4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-ethynylpyrimidine-2, 4-dione | 5-Ethynyl Uridine (EU) | C76184 | Uridine, 5
Specifications & Purity
≥99%
Biochemical and Physiological Mechanisms
Uridine analog. Click chemistry RNA transcription label. Incorporates into RNA during active RNA synthesis. Does not incorporate into DNA. Reacts with azide-containing detection reagents.
Storage
Protected from light, Store at -20°C, Argon charged, Desiccated
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥99%
Names and Identifiers
Pubchem Sid488198755
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488198755
Canonical SmilesC#CC1=CN(C(=O)NC1=O)C2C(C(C(O2)CO)O)O
IUPAC Name1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-ethynylpyrimidine-2,4-dione
InChIKeyQCWBIPKYTBFWHH-FDDDBJFASA-N
INCHI1S/C11H12N2O6/c1-2-5-3-13(11(18)12-9(5)17)10-8(16)7(15)6(4-14)19-10/h1,3,6-8,10,14-16H,4H2,(H,12,17,18)/t6-,7-,8-,10-/m1/s1
Isomeric SMILES C#CC1=CN(C(=O)NC1=O)[C@H]2[C@@H]([C@@H]([C@H](O2)CO)O)O
Molecular Weight 268.22
Reaxy-Rn 25709386
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=25709386&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

3D Structure
Interactive Chemical Structure Model





Associated Targets(non-human)
Pseudomonas aeruginosa (123386 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Salmonella typhimurium (15756 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Staphylococcus aureus (210822 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Escherichia coli (133304 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mycobacterium avium (4587 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mycobacterium tuberculosis (203094 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates（CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

9 results found

Lot NumberCertificate TypeDateItem
B2301684Certificate of AnalysisMay 20, 2026 E276476
G2529295Certificate of AnalysisMay 19, 2026 E276476
G2529331Certificate of AnalysisMay 19, 2026 E276476
G2529332Certificate of AnalysisMay 19, 2026 E276476
B2301672Certificate of AnalysisFeb 04, 2026 E276476
B2301852Certificate of AnalysisFeb 04, 2026 E276476
B2301858Certificate of AnalysisFeb 04, 2026 E276476
B2301881Certificate of AnalysisFeb 04, 2026 E276476
E2512055Certificate of AnalysisFeb 04, 2026 E276476
Chemical and Physical Properties
SolubilitySoluble in PBS and water to 200 mM (with heating)
Sensitivityair sensitive; light sensitive;Moisture sensitive
Melt Point(°C)190℃
Molecular Weight268.220 g/mol
XLogP3-1.700
Hydrogen Bond Donor Count4
Hydrogen Bond Acceptor Count6
Rotatable Bond Count3
Exact Mass268.07 Da
Monoisotopic Mass268.07 Da
Topological Polar Surface Area119.000 Ų
Heavy Atom Count19
Formal Charge0
Complexity493.000
Isotope Atom Count0
Defined Atom Stereocenter Count4
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Pyrimidine Research Selection Guide: Structural Features, Typical Applications, and a Reagent/Building-Block Classification Navigator (Tables 1–5)
Categories: Technical articles
Tags:
Pyrimidine Pyrimidine base
Solution Calculators
Reviews

Customer Reviews

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