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Pomalidomide-PEG2-azide

Cat No.:V82954 Purity: ≥98%
Pomalidomide-PEG2-azide is a synthetic E3 ligase (e.g. CRBN) ligand-linker conjugate, containing a Pomalidomide-based cereblon ligand and a 2-unit PEG linker.
Pomalidomide-PEG2-azide
Pomalidomide-PEG2-azide Chemical Structure CAS No.: 2267306-14-7
Product category: PROTAC Linkers
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
50mg
100mg
Other Sizes
Official Supplier of:
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Product Description
Pomalidomide-PEG2-azide is a synthetic E3 ligase (e.g. CRBN) ligand-linker conjugate, containing a Pomalidomide-based cereblon ligand and a 2-unit PEG linker. Pomalidomide-PEG2-azide is a reagent for click chemistry. It has an azide (N3) moiety and could undergo CuAAc (copper-catalyzed azide-alkyne cycloaddition reaction) with compounds bearing an alkyne group. SPAAC (Strain-promoted alkyne-azide cycloaddition) may also happen with compounds bearing a BCN or DBCO group.
Pomalidomide-PEG2-azide is a synthetic conjugate consisting of a Cereblon (CRBN) ligand derived from Pomalidomide and a 2-unit PEG linker terminated with an azide group. It is designed for use in PROTAC (PROteolysis TArgeting Chimera) technology as a ligand-linker conjugate for E3 ligase, enabling the targeted degradation of proteins. As an E3 ligase ligand-linker conjugate, it is a key building block for synthesizing molecules for targeted protein degradation. The product is a solid powder with a melting point of 188degC and is part of a range of functionalized PROTAC building blocks.
Biological Activity I Assay Protocols (From Reference)
Targets
Cereblon
CRBN (Cereblon), an E3 ubiquitin ligase.
ln Vitro
One ligand is for an E3 ubiquitin ligase, and the other is for the target protein; these two ligands are joined by a linker to form PROTACs. The intracellular ubiquitin-proteasome system is utilized by PROTACs to specifically destroy target proteins[1].
As a cereblon-binding ligand-linker conjugate, Pomalidomide-PEG2-azide itself has no intrinsic biological activity; its function is to recruit the E3 ubiquitin ligase complex. It is the final PROTAC molecule, created by conjugating this building block to a target protein ligand via click chemistry, that will bind to a target protein and facilitate its ubiquitination and subsequent proteasomal degradation.
ln Vivo
No specific in vivo activity has been reported for this conjugate alone; its in vivo degradation activity is observed only when conjugated to a target protein ligand to form a complete PROTAC molecule. The in vivo efficacy of a PROTAC is typically evaluated in mouse xenograft models of target-driven cancers.
Enzyme Assay
N/A; this compound is not assessed in isolated enzyme/receptor binding assays. Its cereblon-binding affinity can be validated via biophysical methods such as surface plasmon resonance (SPR) or isothermal titration calorimetry (ITC) as part of a complete PROTAC construct. The azide group is a bioorthogonal handle that can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAC) or strain-promoted azide-alkyne cycloaddition (SPAAC) with alkyne-containing molecules.
Cell Assay
N/A; this conjugate alone is not tested in cell-based assays but is used as a building block for constructing PROTACs. In a typical cellular assay, a complete PROTAC synthesized from this conjugate is incubated with target-expressing cancer cells for 4-24 hours, after which target protein levels are measured by Western blotting to determine the DC50 (half-maximal degradation concentration).
Animal Protocol
N/A; no animal studies are performed with the ligand-linker conjugate alone. For in vivo studies, the complete PROTAC molecule is typically formulated in a vehicle such as 10% DMSO, 40% PEG300, 5% Tween-80, and 45% saline, and administered to tumor-bearing mice via intraperitoneal (IP) or intravenous (IV) injection. Efficacy is measured by tumor growth inhibition (TGI) and target protein knockdown in tumor tissues.
ADME/Pharmacokinetics
This compound has a molecular weight of 444.40. It is typically stored as a powder at -20degC for up to 3 years or in a solvent at -80degC for up to 1 year. It is soluble in DMSO and is stable under recommended storage conditions. The azide functional group allows for versatile conjugation via click chemistry.
Toxicity/Toxicokinetics
This product is for research use only and is not intended for human or veterinary use. Standard safe handling practices for laboratory chemical reagents should be followed. PROTAC is a registered trademark of Arvinas Operations, Inc., and is used under license.
References

[1]. Discovery of a new class of PROTAC BRD4 degraders based on a dihydroquinazolinone derivative and lenalidomide/pomalidomide. Bioorg Med Chem. 2020 Jan 1;28(1):115228.

Additional Infomation
The terminal azide (N3) group enables bioorthogonal conjugation, allowing for the mild and selective attachment of the cereblon ligand to alkyne-functionalized target protein ligands. This click chemistry approach facilitates the parallel synthesis of PROTAC libraries to screen for optimal linkers and ligands for efficient ternary complex formation and target degradation.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C19H20N6O7
Molecular Weight
444.398103713989
Exact Mass
444.139
CAS #
2267306-14-7
PubChem CID
155292127
Appearance
Off-white to light yellow solid powder
LogP
0.5
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
9
Rotatable Bond Count
10
Heavy Atom Count
32
Complexity
827
Defined Atom Stereocenter Count
0
SMILES
C1CC(=O)NC(=O)C1N2C(=O)C3=C(C2=O)C(=CC=C3)NC(=O)COCCOCCN=[N+]=[N-]
InChi Key
QMQAWNMGKYQDLT-UHFFFAOYSA-N
InChi Code
InChI=1S/C19H20N6O7/c20-24-21-6-7-31-8-9-32-10-15(27)22-12-3-1-2-11-16(12)19(30)25(18(11)29)13-4-5-14(26)23-17(13)28/h1-3,13H,4-10H2,(H,22,27)(H,23,26,28)
Chemical Name
2-[2-(2-azidoethoxy)ethoxy]-N-[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-4-yl]acetamide
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO :~90 mg/mL (~202.52 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 5 mg/mL (11.25 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 50.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.2502 mL 11.2511 mL 22.5023 mL
5 mM 0.4500 mL 2.2502 mL 4.5005 mL
10 mM 0.2250 mL 1.1251 mL 2.2502 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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