## Endpoint to Predict
- Endpoint scope: assay
- Measurement type: IC50
- Label type: continuous
- Binary semantics: pchembl
- Assay description: Binding Assay (ELISA): The ELISA assay was performed in streptavidin coated plates which were preincubated with 200 ul per well of 1 μg ml−1 biotinylated IP3 peptide. The plates were ready to use for MDM2 binding after washing the plate with PBS.Compounds and control solutions in DMSO aliquoted in 96-well plates were pre-incubated in a final 2.5-5% (v/v) DMSO concentration at room temperature (for example 20C.) for 20 min with 190 ul aliquots of optimized concentrations of in vitro translated MDM2, before transfer of the MDM2-compound mixture to the b-IP3 streptavidin plates, and incubation at 4C. for 90 min. After washing three times with PBS to remove unbound MDM2, each well was incubated at 20C. for 1 hour with a TBS-Tween (50 mM Tris pH7.5; 150 mM NaCl; 0.05% Tween 20 nonionic detergent) buffered solution of primary mouse monoclonal anti-MDM2 antibody (Ab-5, Calbiochem, used at a 1/10000 or 1/200 dilution depending on the antibody stock solution used), then washed three times with TBS-Tween before incubation for 45 mins at 20C. with a TBS-Tween buffered solution of a goat-anti-mouse horseradish peroxidase (HRP) conjugated secondary antibody (used at 1/20000 or 1/2000 depending on the antibody stock solution). The unbound secondary antibody was removed by washing three times with TBS-Tween. The bound HRP activity was measured by enhanced chemiluminesence (ECL, Amersham Biosciences) using the oxidation of the diacylhydrazide substrate, luminol, to generate a quantifiable light signal. The percentage of MDM2 inhibition at a given concentration is calculated as the [1−(RLU detected in the compound treated sample−RLU negative DMSO control)÷(RLU of DMSO positive and negative controls)]x100 or as the (RLU detected in the compound treated sample ÷ RLU of DMSO controls)x100.
- Assay organism: Homo sapiens
- Target name: E3 ubiquitin-protein ligase Mdm2
- Target type: SINGLE PROTEIN
- Target organism: Homo sapiens

## Reference Molecule A
- Canonical SMILES: CO[C@]1(c2ccc(Cl)cc2)c2ccc(C(C)(O)CN3CCC(N)CC3)cc2C(=O)N1Cc1ccc(Cl)cn1
- Properties:
- ChEMBL ID: CHEMBL5983225
- Molecular weight: 555.51
- Heavy atoms: 38
- Hydrogen bond donors: 2
- Hydrogen bond acceptors: 6
- TPSA: 91.92
- LogP: 4.52
- Rotatable bonds: 7
- Ring count: 5
- Aromatic rings: 3
- Formal charge: 0
- Fraction Csp3: 0.38
- QED: 0.45

## Known Reference Result on This Endpoint
- Molecule A clean result: median pChEMBL = 8.01
- This result is provided as context for predicting Molecule B on the same endpoint.

## Reference Molecule A Other ChEMBL Evidence
- type IC50; relation =; value 9.7; units nM; pChEMBL 8.01; comment 1135795

## Query Molecule B
- Canonical SMILES: CC(C)(O)c1cc(F)c2c(c1)C(=O)N(Cc1ccc(Cl)cc1)[C@@]2(OCC1(CO)CC1)c1ccc(Cl)cc1
- Properties:
- ChEMBL ID: CHEMBL4856390
- Molecule type: Unknown
- Molecular weight: 544.45
- Heavy atoms: 37
- Hydrogen bond donors: 2
- Hydrogen bond acceptors: 4
- TPSA: 70
- LogP: 6.01
- Rotatable bonds: 8
- Ring count: 5
- Aromatic rings: 3
- Formal charge: 0
- Fraction Csp3: 0.34
- QED: 0.36

## Molecule Similarity
- Weighted Tanimoto: 0.38

Answer: 7.96