Name: Nutlin-3b
Brand: BOC Sciences
Price: 939 USD
Availability: MadeToOrder

Purity

>98%

IUPACName

4-[(4R,5S)-4,5-bis(4-chlorophenyl)-2-(4-methoxy-2-propan-2-yloxyphenyl)-4,5-dihydroimidazole-1-carbonyl]piperazin-2-one

Synonyms

Nutlin-3; nutlin 3; Nutlin 3b; FJA1772CVW; (+)-Nutlin-3; CHEMBL2152332; CHEBI:46742; 4-[(4R,5S)-4,5-Bis(4-chlorophenyl)-2-(4-methoxy-2-propan-2-yloxyphenyl)-4,5-dihydroimidazole-1-carbonyl]piperazin-2-one; 2-Piperazinone, 4-(((4R,5S)-4,5-bis(4-chlorophenyl)-4,5-dihydro-2-(4-methoxy-2-(1-methylethoxy)phenyl)-1H-imidazol-1-yl)carbonyl)-; 4-((4R,5S)-4,5-Bis(4-chlorophenyl)-2-(2-isopropoxy-4-methoxyphenyl)-4,5-dihydro-1H-imidazole-1-carbonyl)piperazin-2-one; 4-[(4R,5S)-4,5-Bis(4-chlorophenyl)-2-(2-isopropoxy-4-methoxyphenyl)-4,5-dihydro-1H-imidazole-1-carbonyl]piperazin-2-one; 4-[[(4R,5S)-4,5-bis(4-chlorophenyl)-4,5-dihydro-2-[4-methoxy-2-(1-methylethoxy)phenyl]-1H-imidazol-1-yl]carbonyl]-2-piperazinone; cis-4-{[4,5-bis(4-chlorophenyl)-2-(2-isopropoxy-4-methoxyphenyl)-4,5-dihydroimidazol-1-yl]carbonyl}piperazin-2-one

InChI Key

BDUHCSBCVGXTJM-IZLXSDGUSA-N

InChI

InChI=1S/C30H30Cl2N4O4/c1-18(2)40-25-16-23(39-3)12-13-24(25)29-34-27(19-4-8-21(31)9-5-19)28(20-6-10-22(32)11-7-20)36(29)30(38)35-15-14-33-26(37)17-35/h4-13,16,18,27-28H,14-15,17H2,1-3H3,(H,33,37)/t27-,28+/m1/s1

Canonical SMILES

CC(C)OC1=C(C=CC(=C1)OC)C2=NC(C(N2C(=O)N3CCNC(=O)C3)C4=CC=C(C=C4)Cl)C5=CC=C(C=C5)Cl

Background Introduction

Nutlin-3b is a small-molecule analog of Nutlin-3, originally designed as an antagonist of the p53-MDM2 protein-protein interaction. Nutlins are highly regarded in the field of targeted protein degradation and cancer research, as they selectively bind to MDM2, a key E3 ubiquitin ligase that negatively regulates the tumor suppressor protein p53. Unlike the more active enantiomer Nutlin-3a, Nutlin-3b is often considered a negative control due to its significantly lower affinity for MDM2, but it also serves as a valuable tool for understanding the specificity of MDM2-targeted strategies, including PROTAC development.

Mechanism

Nutlin-3b binds to the MDM2 E3 ubiquitin ligase, thereby disrupting its interaction with p53 and preventing p53 ubiquitination and degradation. When used as a molecular scaffold, Nutlin-3b can potentially be conjugated to various linkers, enabling the formation of MDM2-based PROTACs for targeted protein degradation. The utility of Nutlin-3b lies primarily in its structural similarity to the active enantiomer while maintaining greatly reduced biological activity, serving as an essential control in mechanistic studies.

Applications

Nutlin-3b is widely used as a reference compound or negative control in studies involving Nutlin-based PROTACs and protein-protein interaction inhibitors. Its applications include:

• Validation of MDM2-p53 interaction studies to confirm target specificity
• Negative control in PROTAC screening assays targeting MDM2 or utilizing MDM2 ligands
• Structural and mechanistic investigations into E3 ligase ligand selectivity
• Medicinal chemistry research exploring enantiomeric pairs for drug development
• SAR studies focused on MDM2-modulated protein degradation platforms

This compound is essential for rigorous pharmacological validation of MDM2-targeted PROTACs, playing a key role in drug discovery, target validation, and mechanism-of-action studies.

• High-purity compound verified by HPLC, NMR, and LC-MS
• Consistent batch-to-batch reproducibility with complete QC documentation
• Supplied with COA, MSDS, and analytical data for traceability
• Reliable global shipping with stability-guaranteed packaging
• Dedicated technical support and optional custom synthesis service
• Demonstrates strong binding affinity to CRBN, VHL, or other E3 ligases
• Enables stable E3 ligase recruitment for targeted protein degradation
• Selective MDM2 inhibitor ligand enables precise targeting of the p53-MDM2 interaction within PROTAC applications.
• High binding affinity and established pharmacological profile make it a trusted scaffold for developing innovative protein degradation tools.

1.Downregulation of cyclin D1 sensitizes cancer cells to MDM2 antagonist Nutlin-3.

Yang P1, Chen W1, Li X2, Eilers G3, He Q1, Liu L1, Wu Y1, Wu Y1, Yu W1, Fletcher JA3, Ou WB1,2,3. Oncotarget. 2016 Apr 26. doi: 10.18632/oncotarget.8999. [Epub ahead of print]

The MDM2-p53 pathway has a prominent oncogenic function in the pathogenesis of various cancers. Nutlin-3, a small-molecule antagonist of MDM2-p53 interaction, inhibits proliferation in cancer cells with wild-type p53. Herein, we evaluate the expression of MDM2, both the full length and a splicing variant MDM2-A, and the sensitivity of Nutlin-3 in different cancer cell lines. Included are seven cell lines with wild-type p53 (four mesothelioma, one breast cancer, one chondrosarcoma, and one leiomyosarcoma), two liposarcoma cell lines harboring MDM2 amplification and wild-type p53, and one mesothelioma cell line harboring a p53 point mutation. Nutlin-3 treatment increased expression of cyclin D1, MDM2, and p53 in cell lines with wild-type p53. Additive effects were observed in cells containing wild-type p53 through coordinated attack on MDM2-p53 binding and cyclin D1 by lentivirual shRNA knockdown or small molecule inhibition, as demonstrated by immunoblots and cell viability analyses.

2.Inhibition of WIP1 phosphatase sensitizes breast cancer cells to genotoxic stress and to MDM2 antagonist nutlin-3.

Pechackova S1, Burdova K1, Benada J1, Kleiblova P1,2, Jenikova G1, Macurek L1. Oncotarget. 2016 Feb 13. doi: 10.18632/oncotarget.7363. [Epub ahead of print]

PP2C family serine/threonine phosphatase WIP1 acts as a negative regulator of the tumor suppressor p53 and is implicated in silencing of cellular responses to genotoxic stress. Chromosomal locus 17q23 carrying the PPM1D (coding for WIP1) is commonly amplified in breast carcinomas and WIP1 was proposed as potential pharmacological target. Here we employed a cellular model with knocked out PPM1D to validate the specificity and efficiency of GSK2830371, novel small molecule inhibitor of WIP1. We have found that GSK2830371 increased activation of the DNA damage response pathway to a comparable level as the loss of PPM1D. In addition, GSK2830371 did not affect proliferation of cells lacking PPM1D but significantly supressed proliferation of breast cancer cells with amplified PPM1D. Over time cells treated with GSK2830371 accumulated in G1 and G2 phases of the cell cycle in a p21-dependent manner and were prone to induction of senescence by a low dose of MDM2 antagonist nutlin-3.

3.Nutlin-3 treatment spares cisplatin-induced inhibition of bone healing while maintaining osteosarcoma toxicity.

Stine KC1, Wahl EC2, Liu L2, Skinner RA3, VanderSchilden J3, Bunn RC1, Montgomery CO3, Suva LJ3, Aronson J1,2,3, Becton DL1, Nicholas RW3, Swearingen CJ1,4, Lumpkin CK Jr1,2. J Orthop Res. 2016 Feb 11. doi: 10.1002/jor.23192. [Epub ahead of print]

The majority of Osteosarcoma (OS) patients are treated with a combination of chemotherapy, resection, and limb salvage protocols. These protocols include distraction osteogenesis (DO), which is characterized by direct new bone formation. Cisplatin (CDP) is extensively used for OS chemotherapy and recent studies, using a mouse DO model, have demonstrated that CDP has profound negative effects on bone repair. Recent oncological therapeutic strategies are based on the use of standard cytotoxic drugs plus an assortment of biologic agents. Here we demonstrate that the previously reported CDP-associated inhibition of bone repair can be modulated by the administration of a small molecule p53 inducer (nutlin-3). The effects of nutlin-3 on CDP osteotoxicity were studied using both pre- and post-operative treatment models. In both cases the addition of nutlin-3, bracketing CDP exposure, demonstrated robust and significant bone sparing activity (p < 0.

ConcentrationVolumeMass	1 mg	5 mg	10 mg
1 mM	1.7197 mL	8.5986 mL	17.1972 mL
5 mM	0.3439 mL	1.7197 mL	3.4394 mL
10 mM	0.1720 mL	0.8599 mL	1.7197 mL
50 mM	0.0344 mL	0.1720 mL	0.3439 mL

What about the solubility of Nutlin-3b?

The concentration in DMSO was 10 mM.

20/10/2022

In vitro activity

In our study, Nutlin-3b is useful as a negative control for non-MDM2-related cellular activities. Nutlin-3a induces the expression of MDM2 and p21 (but not p53) only in cells with wild-type p53. Nutlin-3b has no effect regardless of the p53 status of the cells. Only the active enantiomer Nutlin-3a shows a potent antiproliferative activity and clear separation of potency between the cells harboring wild-type p53 and those harboring mutant p53. The potency of Nutlin-3b is much lower in the wild-type p53 cells and nearly identical to the potency of Nutlin-3a against the mutant p53 cells. After 48 hours of exposure to the Nutlin-3a, 45% of the cell population became TUNEL positive, but cells treated with the Nutlin-3b are indistinguishable from the untreated controls. [

15/10/2022

Biacore study

We conducted the competition assay performed on a Biacore S51. A Series S Sensor chip CM5 is utilized for the immobilization of a PentaHis antibody for capture of the His-tagged p53. The level of capture is ~200 response units (1 response unit corresponds to 1 pg of protein per mm 2). The concentration of MDM2 protein is kept constant at 300 nM. Nutlin-3 is dissolved in DMSO at 10 mM and further diluted to make a concentration series of Nutlin-3 in each MDM2 test sample. The assay is run at 25°C in running buffer (10 mM Hepes, 0.15 M NaCl, 2% DMSO). MDM2-p53 binding in the presence of Nutlin-3 is calculated as a percentage of binding in the absence of Nutlin-3 and IC50 is calculated

16/10/2022

biological activity

We found that Nutlin-3b was a p53/MDM2 antagonist or inhibitor (IC50: 13.6 μM), 150-fold less potent (+)-enantiomer of Nutlin-3 as in comparison with opposite (-)-enantiomer Nutlin-3a.

17/10/2022

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* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C₁V₁ = C₂V₂