WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 407225

CAS#: 186611-52-9

Description: SU5607, also known as IC-261, is a potent and selective CK1 inhibitor. IC261 triggers the mitotic checkpoint and induces p53-dependent postmitotic effects. At low micromolar concentrations IC261 inhibits cytokinesis causing a transient mitotic arrest. IC261 induces cell cycle arrest and apoptosis of human cancer cells via CK1δ/ɛ and Wnt/β-catenin independent inhibition of mitotic spindle formation. IC261 binds to tubulin with an affinity similar to colchicine and is a potent inhibitor of microtubule polymerization. This activity accounts for many of the diverse biological effects of IC261 and, most importantly, for its selective cancer cell killing.

Chemical Structure

CAS# 186611-52-9

Theoretical Analysis

MedKoo Cat#: 407225
Name: SU5607
CAS#: 186611-52-9
Chemical Formula: C18H17NO4
Exact Mass: 311.11576
Molecular Weight: 311.34
Elemental Analysis: C, 69.44; H, 5.50; N, 4.50; O, 20.56

Size Price Shipping out time Quantity
10mg USD 120 Same day
25mg USD 190 Same day
50mg USD 350 Same day
100mg USD 550 Same day
200mg USD 850 Same day
500mg USD 1450 Same day
1g USD 2350 Same day
2g USD 3450 Same day
Inquire bulk and customized quantity

Pricing updated 2021-02-25. Prices are subject to change without notice.

SU5607 (IC261), purity > 98%, is in stock. The same day shipping out after order is received.

Synonym: IC261; IC-261; IC 261 SU5607; SU-5607; SU 5607.

IUPAC/Chemical Name: (E)-3-(2,4,6-trimethoxybenzylidene)indolin-2-one


InChi Code: InChI=1S/C18H17NO4/c1-21-11-8-16(22-2)14(17(9-11)23-3)10-13-12-6-4-5-7-15(12)19-18(13)20/h4-10H,1-3H3,(H,19,20)/b13-10+

SMILES Code: COC1=C(/C=C2C(NC3=C/2C=CC=C3)=O)C(OC)=CC(OC)=C1

Yellow solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Preparing Stock Solutions

The following data is based on the product molecular weight 311.34 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Stöter M, Krüger M, Banting G, Henne-Bruns D, Knippschild U. Microtubules depolymerization caused by the CK1 inhibitor IC261 may be not mediated by CK1 blockage. PLoS One. 2014 Jun 17;9(6):e100090. doi: 10.1371/journal.pone.0100090. eCollection 2014. PubMed PMID: 24937750; PubMed Central PMCID: PMC4061085.

2: Cheong JK, Nguyen TH, Wang H, Tan P, Voorhoeve PM, Lee SH, Virshup DM. IC261 induces cell cycle arrest and apoptosis of human cancer cells via CK1δ/ɛ and Wnt/β-catenin independent inhibition of mitotic spindle formation. Oncogene. 2011 Jun 2;30(22):2558-69. doi: 10.1038/onc.2010.627. Epub 2011 Jan 24. PubMed PMID: 21258417; PubMed Central PMCID: PMC3109269.

3: Höttecke N, Liebeck M, Baumann K, Schubenel R, Winkler E, Steiner H, Schmidt B. Inhibition of gamma-secretase by the CK1 inhibitor IC261 does not depend on CK1delta. Bioorg Med Chem Lett. 2010 May 1;20(9):2958-63. doi: 10.1016/j.bmcl.2010.02.110. Epub 2010 Mar 4. PubMed PMID: 20350806.

4: Brockschmidt C, Hirner H, Huber N, Eismann T, Hillenbrand A, Giamas G, Radunsky B, Ammerpohl O, Bohm B, Henne-Bruns D, Kalthoff H, Leithäuser F, Trauzold A, Knippschild U. Anti-apoptotic and growth-stimulatory functions of CK1 delta and epsilon in ductal adenocarcinoma of the pancreas are inhibited by IC261 in vitro and in vivo. Gut. 2008 Jun;57(6):799-806. doi: 10.1136/gut.2007.123695. Epub 2008 Jan 18. PubMed PMID: 18203806.

5: Behrend L, Milne DM, Stöter M, Deppert W, Campbell LE, Meek DW, Knippschild U. 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. 2000 Nov 9;19(47):5303-13. PubMed PMID: 11103931.