UK 21 structure

UK 21

TL;DR: UK 21 (CAS 134423-92-0) is a chemical compound with molecular formula C39H62FN5O12 and molecular weight 811.44 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.

[(2R,3R,4R,5R)-5-(5-fluoro-2,4-dioxopyrimidin-1-yl)-3,4-bis[[2-(2-propylpentanoylamino)acetyl]oxy]oxolan-2-yl]methyl 2-(2-propylpentanoylamino)acetate

Also Known As: UK 21, 2',3',5'-Tris-O-(N -(2-n-propyl-n-pentanoyl)glycyl)-5-fluorouridine, [(2R,3R,4R,5R)-5-(5-fluoro-2,4-dioxopyrimidin-1-yl)-3,4-bis[[2-(2-propylpentanoylamino)acetyl]oxy]oxolan-2-yl]methyl 2-(2-propylpentanoylamino)acetate, 2',3',5'-Tris-O-(N-(2-n-propyl-n-pentanoyl)glycyl)-5-fluorouridine, Glycine, N-(1-oxo-2-propylpentyl)-, triester with 5-fluorouridine

CAS: 134423-92-0
Molecular Formula C39H62FN5O12
Molecular Weight 811.44 g/mol
LogP 5.7
Topological Polar Surface Area 225.0 Ų
Hydrogen Bond Donors 4
Hydrogen Bond Acceptors 13
Rotatable Bonds 29
Exact Mass 811.4379
Heavy Atoms 57
Complexity 1410.0

Chemical Identifiers

CAS Number 134423-92-0
SMILES CCCC(CCC)C(=O)NCC(=O)OC[C@@H]1[C@H]([C@H]([C@@H](O1)N2C=C(C(=O)NC2=O)F)OC(=O)CNC(=O)C(CCC)CCC)OC(=O)CNC(=O)C(CCC)CCC
InChIKey BRWICCRLZVPGRD-DKMDIHIKSA-N

Patent-Derived Application Labels

Derived from 2 IPC patent classification(s) across the SureChEMBL global patent database.

Heterocyclic Building Blocks (7 patents) Pharmaceutical Intermediates (5 patents)

Product Overview

UK 21 (CAS 134423-92-0), with molecular formula C39H62FN5O12 and molecular weight 811.44 g/mol. IUPAC: [(2R,3R,4R,5R)-5-(5-fluoro-2,4-dioxopyrimidin-1-yl)-3,4-bis[[2-(2-propylpentanoylamino)acetyl]oxy]oxolan-2-yl]methyl 2-(2-propylpentanoylamino)acetate.

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Safety Data Sheet (MSDS / SDS) View the Laboratory Chemical Safety Summary (LCSS) on PubChem — includes GHS classifications, hazard statements, first aid measures, and handling precautions.
View MSDS →

Chemical Property Profile of UK 21

XLogP
5.7
TPSA (Topological Polar Surface Area)
225.0
Hydrogen Bond Donors
4
Hydrogen Bond Acceptors
13
Rotatable Bonds
29
Heavy Atoms
57
Complexity
1410.0
Exact Mass
811.4379
Monoisotopic Mass
811.4379
Data Source: Chemical property values are referenced from PubChem, the world's largest open chemistry database maintained by the National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine.

Property Insights of UK 21

The XLogP value of 5.7 indicates that UK 21 is lipophilic (fat-soluble), which may influence its absorption, distribution, and formulation strategy. The TPSA of 225.0 Ų indicates high polarity, suggesting UK 21 may have limited membrane permeability but good aqueous solubility. Following Lipinski's Rule of Five, UK 21 has 4 hydrogen bond donor(s) and 13 hydrogen bond acceptor(s), which may warrant consideration for formulation optimization.

Frequently Asked Questions

What is the typical lead time for this product?
Lead time typically ranges from 3-7 business days for in-stock items. For larger quantities or custom orders, please contact us for specific lead times.
Can you provide samples for testing?
Yes, we offer sample quantities for quality testing. Please submit an inquiry with your requirements and we will arrange samples accordingly.
What documentation do you provide with the product?
We provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and technical data sheets with each shipment.
Do you ship internationally?
Yes, we ship to most countries worldwide. Shipping costs and delivery times vary by location. Please contact us for specific shipping information.

Frequently Asked Questions

What is the CAS number of UK 21?

The CAS number of UK 21 is 134423-92-0.

What is the molecular formula of UK 21?

The molecular formula of UK 21 is C39H62FN5O12.

What is the molecular weight of UK 21?

The molecular weight of UK 21 is 811.44 g/mol.

Where can I buy UK 21?

You can request a quote for UK 21 directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.

Does KEHONG BIO offer custom synthesis for UK 21?

Yes, KEHONG BIO provides custom synthesis services for UK 21 and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.

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