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Safety Information

SML2971

Sigma-Aldrich

K03861

≥98% (HPLC)

Synonym(s):

1-[4-(2-Aminopyrimidin-4-yloxy)phenyl]-3-[4-[(4-methylpiperazin-1-yl)methyl]-3-trifluoromethylphenyl]urea, AUZ 454, AUZ-454, AUZ454, CCG 269702, CCG-269702, CCG269702, K 03861, K-03861, N-[4-[(2-Amino-4-pyrimidinyl)oxy]phenyl]-N′-[4-[(4-methyl-1-piperazinyl)methyl]-3-(trifluoromethyl)phenyl]urea

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About This Item

Empirical Formula (Hill Notation):
C24H26F3N7O2
CAS Number:
853299-07-7
Molecular Weight:
501.50
MDL number:
MFCD19443769
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear

storage temp.

−20°C

InChI

1S/C24H26F3N7O2/c1-33-10-12-34(13-11-33)15-16-2-3-18(14-20(16)24(25,26)27)31-23(35)30-17-4-6-19(7-5-17)36-21-8-9-29-22(28)32-21/h2-9,14H,10-13,15H2,1H3,(H2,28,29,32)(H2,30,31,35)

InChI key

PWDLXPJQFNVTNL-UHFFFAOYSA-N

Biochem/physiol Actions

K03861 is an ATP site-binding, cyclin-competitive, type II CDK2 inhibitor that selectively targets and locks the kinase in its inactive DFG-out conformation (CDK2 Kd = 50 nM, DFG-out stabilizing CDK2-C118L/A144C mutant Kd = 9.7 nM without vs. 134.1 nM with bound cycB; CDK2-C118L/A144C-cycA IC50 = 0.8 μM), rendering it incompatible for cyclin bining. K03861 selectively inhibits CDK2-C118L/A144C over CycA-bound wt CDK2 by in vitro kinase assay (IC50 = 0.8 vs. >10 μM) and inhibits the proliferation of immortalized multipotent otic progenitor (iMOP) murine cell line (by 81% and 92%, resepectively, at 0.1 and 1.0 μM).

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

SML2971-25MG:
SML2971-VAR:
SML2971-5MG:
SML2971-BULK:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Carrow I Wells et al.
Nature communications, 11(1), 2743-2743 (2020-06-04)
Concerted multidisciplinary efforts have led to the development of Cyclin-Dependent Kinase inhibitors (CDKi's) as small molecule drugs and chemical probes of intracellular CDK function. However, conflicting data has been reported on the inhibitory potency of CDKi's and a systematic characterization
Atsushi Okuma et al.
Nature communications, 8(1), 2050-2050 (2017-12-14)
p16Ink4a and p21Cip1/Waf1 act as tumour suppressors through induction of cellular senescence. However, senescence-independent roles of these CDK inhibitors are not well understood. Here, we report an unexpected function of p16Ink4 and p21Cip1/Waf1, namely, tumour promotion through chemotaxis. In monocytic
Zhichao Song et al.
Stem cell reports, 9(5), 1516-1529 (2017-10-17)
Loss of spiral ganglion neurons (SGNs) significantly contributes to hearing loss. Otic progenitor cell transplantation is a potential strategy to replace lost SGNs. Understanding how key transcription factors promote SGN differentiation in otic progenitors accelerates efforts for replacement therapies. A
Zhichao Song et al.
Frontiers in cell and developmental biology, 7, 87-87 (2019-06-14)
Stem cell replacement therapy is a potential method for repopulating lost spiral ganglion neurons (SGNs) in the inner ear. Efficacy of cell replacement relies on proper differentiation. Defining the dynamic expression of different transcription factors essential for neuronal differentiation allows

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