Cat. No. 4660

KB SRC 4 C32H23ClN8 [1380088-03-8]

Price and Availability

For KB SRC 4 pricing & availability please select your country from the drop down menu:
By clicking submit you agree to accept a cookie from Tocris Bioscience. For details, please read our privacy and cookie policy.

Chemical Name: 1-[3-[1-([1,1'-Biphenyl]-3-ylmethyl)-1H-1,2,3-triazol-5-yl]phenyl]-3-(4-chlorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

Biological Activity

Potent and selective c-Src inhibitor (Ki = 44 nM); does not inhibit c-Abl at concentrations up to 125 μM. Selective between Src family members (Kd values are 86, 160, 240, 720, 3200, 4400, and >40,000 nM for c-Src, Lck, Fgr, Yes, Lyn, Hck and Fyn respectively). Significantly inhibits cell growth in 4T1 mammary carcinoma tumor cells.

Technical Data

Soluble to 20 mM in DMSO
>98 %
Store at +4°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

Certificate of Analysis: View current batch
Safety Data Sheet: View Safety Data Sheet

Brandvold et al (2012) Development of a highly selective c-Src kinase inhibitor. ACS Chem.Biol. 7 1393. PMID: 22594480.

If you know of a relevant reference for this product please let us know.

Citations are publications that use Tocris products.

Do you know of a great paper that uses KB SRC 4 from Tocris? If so please let us know.

View Related Products by Target

View Related Products by Product Action

Keywords: KB SRC 4, supplier, KBSRC4, c-Src, Src, kinases, inhibitors, inhibits, 4T1, mammary, carcinoma, tumor, cells, breast, cancer, non-receptor, tyrosine, kinases, Tocris Bioscience, Src Kinase Inhibitor products

Quick Order

Find multiple products by catalog number

divider line

Cancer Research Product Guide

Cancer Research Product Guide

Our Cancer Research Guide highlights over 750 products for cancer research. Request copy or view PDF today.

divider line

Kinase Inhibitor Toolbox

80 Kinase inhibitors
pre-dissolved in DMSO

Kinase Inhibitor Toolbox

Includes many of the latest kinase inhibitors to become commercially available. Covers a wide range of kinase targets including EGFR, MAPK and CDK.

divider line

Kinases Product Listing

Kinases Product Listing

Our Kinase listing highlights over 400 products for kinase research. Request copy or view PDF today.

divider line

Immunology Guide

Immunology Product Listing

Our Immunology listing highlights over 190 products for immunology research. Request copy or view PDF today.

divider line

New Products in this Area

PI 3065

Potent and selective PI 3-kinase p110δ inhibitor


Potent and selective PFKFB3 inhibitor

STOCK2S 26016

Lysine deficient protein kinase (WNK) signaling inhibitor

rac-CCT 250863

Potent Nek2 inhibitor


Potent, selective cyclin-dependent kinase inhibitor


Potent PKCβ inhibitor

BMS 265246

Potent cdk1/2 inhibitor

Autocamtide-2-related inhibitory peptide, myristoylated

CaM kinase II inhibitor; enhanced cell permeable derivative of Autocamtide-2-related inhibitory peptide

MP A08

Selective ATP competitive SphK1 and 2 inhibitor; cell permeable


Potent and selective dual Akt1 and 2 inhibitor

VX 680

High affinity and selective Aurora kinase inhibitor

Imatinib mesylate

Potent and selective v-Abl tyrosine kinase inhibitor; also inhibits PDGFR and c-kit

TGX 221

Potent and selective PI 3-kinase β inhibitor

PF 543 hydrochloride

Potent and selective SphK1 inhibitor

Sign-up for new product e-alerts
divider line

Bio-Techne Events

ASCB 2016

ASCB 2016

December 3 - 7, 2016

San Francisco, CA,

Booth: 314