Catalog No.S7553 Synonyms: G-868

For research use only.

GDC-0623 (G-868) is a potent and ATP-uncompetitive MEK1 inhibitor with Ki of 0.13 nM. Phase 1.

GDC-0623 Chemical Structure

CAS No. 1168091-68-6

Selleck's GDC-0623 has been cited by 8 Publications

1 Customer Review

Purity & Quality Control

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Biological Activity

Description GDC-0623 (G-868) is a potent and ATP-uncompetitive MEK1 inhibitor with Ki of 0.13 nM. Phase 1.
MEK1 [1]
0.13 nM
In vitro

In a panel of mutant cancer cell lines, GDC-0623 inhibits cellular proliferation with EC50 of 4 nM, 53 nM, 11 nM, 18 nM and 94 nM for A375 (BRAFV600E), HCT116 (KRASG13D), COLO 205 (V600E), HT-29 (V600E), and HCT116 (G13D) cells, respectively. [1] In isogenic KRAS HCT116 and mutant KRAS SW620 colon cells, GDC-0623 upregulates BIM via its loss of phosphorylation at Ser69. GDC-0623 plus ABT-263 induces a synergistic cell apoptosis. [2]

In vivo In vivo, GDC-0623 (40 mg/kg, p.o.) causes potent tumor growth inhibition (TGI) in mouse MiaPaCa-2 (120%), A375 (102%) and HCT116 (115%) xenografts. [1]

Protocol (from reference)

Kinase Assay:[1]
  • In vitro Kinase assays:

    0.14 μM of purified inactive recombinant MEK-1 (Upstate) protein is preincubated with inhibitors in 15 μL of kinase buffer including (20 mM MOPS pH7.2, 25 mM beta glycerol phosphate, 5 mM EGTA, 1 mM sodium orthovanadate, 1 mM DTT, 100 μM ATP, 15 mM MgCl2). After incubating 10 minutes at 30°C, 1 ng of BRAF, CRAF or BRAF V600E combined with 0.5 μg of inactive recombinant ERK2 is added to the reaction in total volume of 20 μL. After incubating 30 minutes at 30°C the reaction is stopped by adding Laemmle sample buffer. Enzyme activity is measured by determining level of phosphor-MEK by SDS-PAGE. Immunoreactive proteins are visualized with SuperSignal West Pico Chemiluminescent Substrate.

Animal Research:[1]
  • Animal Models: Mice bearing MiaPaCa-2, A375 and HCT116 xenografts
  • Dosages: 40 mg/kg daily
  • Administration: p.o.

Solubility (25°C)

In vitro

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
5% DMSO+45% PEG 300+ddH2O
For best results, use promptly after mixing.


Chemical Information

Molecular Weight 456.21


CAS No. 1168091-68-6
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles C1=CC(=C(C=C1I)F)NC2=C(C=CC3=CN=CN32)C(=O)NOCCO

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT01106599 Completed Drug: GDC-0623 Solid Cancers Genentech Inc. April 2010 Phase 1

(data from, updated on 2022-08-01)

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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