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Key Documents

SML1761

Sigma-Aldrich

AA-CW236

≥98% (HPLC)

Synonym(s):

4-(2-(5-(Chloromethyl)-4-(4-(trifluoromethoxy)phenyl)-1H-1,2,3-triazol-1-yl)ethyl)-3,5-dimethylisoxazole

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About This Item

Empirical Formula (Hill Notation):
C17H16ClF3N4O2
CAS Number:
Molecular Weight:
400.78
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 25 mg/mL protein, clear

storage temp.

2-8°C

SMILES string

CC1=C(CCN2N=NC(C3=CC=C(OC(F)(F)F)C=C3)=C2CCl)C(C)=NO1

Application

AA-CW236 has been used as an inhibitor of m6G DNA methyltransferase in mouse embryo fibroblasts.

Biochem/physiol Actions

AA-CW236 is a cell-permeable chloromethyl triazole (CMT) derivative that acts as a non-pseudosubstrate inhibitor against human O(6)-alkylguanine DNA methyltransferase (MGMT) by targeting MGMT active site Cys145 for covalent modification (KI = 24 nM, kinact = 0.03/min), displaying little affinity toward cysteines from other cellular proteins. AA-CW236 pretreatment (1 μM) effectively prevents MGMT from repairing DNA damage, causing significantly more upregulated O6-alkylguanine accumulation than the pseudosubstrate inhibitor Lomeguatrib (1 μM) when co-administered with the DNA-alkylating agent Temozolomide/TMZ (300 μM) in MCF-7 cells. Likewise, AA-CW236 is shown to boost TMZ toxicity in Caco-2 cultures (IC50 = 227 and 673 μM, respectively, with or without 3 μM AA-CW236 co-treatment).

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Pennapa Thongararm et al.
Chemical research in toxicology, 33(2), 625-633 (2019-12-17)
DNA methylating agents are abundant in the environment and are sometimes used in cancer chemotherapy. They react with DNA to form methyl-DNA adducts and byproduct lesions that can be both toxic and mutagenic. Foremost among the mutagenic lesions is O6-methylguanine

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