Cdk4 inhibitor II   Click here for help

GtoPdb Ligand ID: 5951

Synonyms: NSC 625987 | NSC-625987 | NSC625987
Compound class: Synthetic organic
Comment: NSC 625987 was originally reported as a cyclin-dependent kinase 4 (CDK4) inhibitor, with >500-fold selectivity compared to CDK2 (IC50 >100 μM for cdc2/cyclin A, CDK2/cyclin A and CDK2/cyclin E) [4]. However, kinase profiling results reported by Jorda et al. (2018) found that no kinases tested were >50% inhibited by 10 μM NSC 625987 [3]. In addition, these authors found no evidence of CDK4 inhibition in cellular assays. Therefore, caution is advised when choosing CDK4 pharmacological tools.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species

Cdk4 inhibitor II is commercially available from our sponsors

2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 0
Hydrogen bond donors 1
Rotatable bonds 2
Topological polar surface area 66.34
Molecular weight 271.07
XLogP 4.16
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

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Canonical SMILES COc1ccc(c2c1[nH]c1ccccc1c2=S)OC
Isomeric SMILES COc1ccc(c2c1[nH]c1ccccc1c2=S)OC
InChI InChI=1S/C15H13NO2S/c1-17-11-7-8-12(18-2)14-13(11)15(19)9-5-3-4-6-10(9)16-14/h3-8H,1-2H3,(H,16,19)
InChI Key KFAKESMKRPNZTM-UHFFFAOYSA-N

Large-scale screening data

EMD Millipore KinaseProfilerTM screen/Reaction Biology Kinase HotspotSM screen Click here for help
A screen profiling 158 kinase inhibitors (Calbiochem Protein Kinase Inhibitor Library I and II, catalogue numbers 539744 and 539745) for their inhibitory activity at 1µM and 10µM against 234 human recombinant kinases using the EMD Millipore KinaseProfilerTM service.

A screen profiling the inhibitory activity of 178 commercially available kinase inhibitors at 0.5µM against a panel of 300 recombinant protein kinases using the Reaction Biology Corporation Kinase HotspotSM platform.

http://www.millipore.com/techpublications/tech1/pf3036
http://www.reactionbiology.com/webapps/main/pages/kinase.aspx

Reference: 1-2
Key to terms and symbols Click column headers to sort
Target Name in screen Sp. Type Action % Activity remaining at 0.5µM % Activity remaining at 1µM % Activity remaining at 10µM
glycogen synthase kinase 3 beta GSK3β/GSK3b Hs Inhibitor Inhibition 61.3 118.0 94.0
Protein kinase G (PKG) 2 nd/PKG2(PRKG2) Hs Inhibitor Inhibition 62.2
fms related receptor tyrosine kinase 3 Flt3/FLT3 Hs Inhibitor Inhibition 71.0 83.0 73.0
calcium/calmodulin dependent protein kinase I CaMKI/CAMK1a Hs Inhibitor Inhibition 75.2 96.0 77.0
protein kinase C gamma PKCγ/PKCg Hs Inhibitor Inhibition 77.6 96.0 91.0
cyclin dependent kinase 2 CDK2/cyclin E Hs Inhibitor Inhibition 77.9
KIT proto-oncogene, receptor tyrosine kinase cKit/c-Kit Hs Inhibitor Inhibition 78.6 93.0 93.0
serine/threonine kinase 24 MST3/MST3(STK24) Hs Inhibitor Inhibition 78.9 80.0 85.0
STE20 like kinase nd/SLK(STK2) Hs Inhibitor Inhibition 80.2
CDC like kinase 2 CLK2/CLK2 Hs Inhibitor Inhibition 81.2 99.0 74.0
Displaying the top 10 targets  View all targets in screen »