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Key Documents

SML3194

Sigma-Aldrich

ZSTK474

≥98% (HPLC)

Synonym(s):

2-(2-Difluoromethylbenzimidazol-1-yl)-4,6-dimorpholino-1,3,5-triazine, 2-(Difluoromethyl)-1-(4,6-di-4-morpholinyl-1,3,5-triazin-2-yl)-1H-benzimidazole, 4,4′-(6-(2-(Difluoromethyl)-1H-benzo[d]imidazol-1-yl)-1,3,5-triazine-2,4-diyl)dimorpholine, ZSTK 474, ZSTK-474, 2-(2-Difluoromethylbenzoimidazol-1-yl)-4, 6-dimorpholino-1, 3, 5-triazine

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About This Item

Empirical Formula (Hill Notation):
C19H21F2N7O2
CAS Number:
Molecular Weight:
417.41
UNSPSC Code:
12352200
NACRES:
NA.77

Pricing and availability is not currently available.

Quality Level

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 2 mg/mL, clear (warmed)

storage temp.

−20°C

InChI

1S/C19H21F2N7O2/c20-15(21)16-22-13-3-1-2-4-14(13)28(16)19-24-17(26-5-9-29-10-6-26)23-18(25-19)27-7-11-30-12-8-27/h1-4,15H,5-12H2

InChI key

HGVNLRPZOWWDKD-UHFFFAOYSA-N

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Biochem/physiol Actions

A novel s-triazine derivative, ZSTK474 [2-(2-difluoromethylbenzimidazol-1-yl)-4,6-dimorpholino-1,3,5-triazine], strongly inhibited the growth of tumor cells. A molecular target for ZSTK474 is PI3K. ZSTK474 directly inhibits PI3K activity more efficiently than the PI3K inhibitor LY294002. At concentrations of 1μM, ZSTK474 and LY2194002 reduced PI3K activity to 4.7% (95% confidence interval [CI] = 3.2% to 6.1%) and 44.6% (95% CI = 38.9% to 50.3%), respectively, of the untreated control level. Molecular modeling of the PI3K-ZSTK474 complex indicated that ZSTK474 could bind to the ATP-binding pocket of PI3K. ZSTK474 inhibited phosphorylation of signaling components downstream from PI3K, such as Akt and glycogen synthase kinase 3β, and mediated a decrease in cyclin D1 levels. ZSTK474 administered orally to mice had strong antitumor activity against human cancer xenografts without toxic effects in critical organs. Akt phosphorylation was reduced in xenograft tumors after oral administration of ZSTK474. ZSTK474 is a new PI3K inhibitor with strong antitumor activity against human cancer xenografts without toxic effects in critical organs.
ZSTK474 is an orally active, potent and selective, ATP-competitive inhibitor against class I phosphatidylinositol 3 kinase isoforms (PI3K IC50 in nM = 4.6/δ, 16/α, 44/β, 49/γ with = 10 μM ATP; mTOR IC50 >100 μM) with 27-fold selectivity for PI3Kα over DNA-PK. ZSTK474 inhibits PI3K-mediated signaling events in A549 cells in cultures (0.5 μM; Akt pSer473, GSK-3β pSer9, cyclinD1 expression) and induces tumor growth arrest or regression in mice in vivo (100, 200, or 400 mg/kg via daily p.o. against murine B16F10 melanoma or human A549 lung cancer, PC-3 prostate cancer, and WiDr colon cancer).

Diagnostic Implications

Potent antitumor activity by oral administration against murine solid tumors and human cancer xenografts

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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