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Submit ReviewIC 261
Discontinued Product
IC 261 (Cat. No. 6676) has been withdrawn from sale for commercial reasons.
Description: CK1 inhibitor; displays selectivity for CK1δ and CK1ε
Chemical Name: 1,3-Dihydro-3-[(2,4,6-trimethoxyphenyl)methylene]-2H-indol-2-one
Purity: ≥98% (HPLC)
Biological Activity for IC 261
IC 261 is an ATP-competitive casein kinase 1 (CK1) inhibitor. Displays >15 fold selectivity for CK1δ and CK1ε over CK1α (IC50 values are approximately 1 μM for CK1δ and CK1ε and 16 μM for CK1α). Arrests cell cycle at postmitotic G1 phase in cells expressing p53. Inhibits CK1 mediated phosphorylation of LRRK2 in cell lines.
Technical Data for IC 261
| M. Wt | 311.33 |
| Formula | C18H17NO4 |
| Storage | Store at -20°C |
| Purity | ≥98% (HPLC) |
| CAS Number | 186611-52-9 |
| PubChem ID | 3674 |
| InChI Key | JBJYTZXCZDNOJW-UHFFFAOYSA-N |
| Smiles | COC1=CC(OC)=C(C(OC)=C1)/C=C2C(NC3=C/2C=CC=C3)=O |
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Product Datasheets for IC 261
References for IC 261
References are publications that support the biological activity of the product.
Behrend et al (2000) IC261, a specific inhibitor of the protein kinases casein kinase 1-delta and -epsilon, triggers the mitotic checkpoint and induces p53-dependent postmitotic effects. Oncogene 19 5303 PMID: 11103931
Mashhoon et al (2000) Crystal structure of a conformation-selective casein kinase-1 inhibitor. J.Med.Chem. 275 20052 PMID: 10749871
Chia et al (2014) Phosphorylation of LRRK2 by casein kinase 1α regulates trans-Golgi clustering via differential interaction with ARHGEF7. Nat.Commun. 5 5827 PMID: 25500533
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Keywords: IC 261, IC 261 supplier, IC261, casein, kinase, 1, CK1, inhibitor, inhibits, CK1delta, CK1epsilon, Casein, Kinase, 6676, Tocris Bioscience
Citations for IC 261
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Currently there are no citations for IC 261.
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