L-779450

Modify Date: 2024-01-03 11:17:14

L-779450 Structure
L-779450 structure
Common Name L-779450
CAS Number 303727-31-3 Molecular Weight 347.79800
Density 1.335g/cm3 Boiling Point 579.783ºC at 760 mmHg
Molecular Formula C20H14ClN3O Melting Point N/A
MSDS Chinese USA Flash Point 304.442ºC
Symbol GHS06
GHS06
Signal Word Danger

 Use of L-779450


L-779450 is a potent and selective B-Raf kinase inhibitor with a Kd of 2.4 nM.

 Names

Name 2-chloro-5-(2-phenyl-5-pyridin-4-yl-1H-imidazol-4-yl)phenol
Synonym More Synonyms

 L-779450 Biological Activity

Description L-779450 is a potent and selective B-Raf kinase inhibitor with a Kd of 2.4 nM.
Related Catalog
Target

B-Raf:2.4 nM (Kd)

In Vitro L-779450 (L-779,450) shows a high degree of specificity towards Raf. The only other tested kinase inhibited is p38MAPK, which has a kinase domain structurally related to Raf. L-779450 inhibits anchorage-independent growth of human tumor lines at doses ranging from 0.3 to 2 μM[2]. The effects of L-779450 (L-779,450) on TRAIL sensitivity are investigated here in melanoma cell lines with high TRAIL sensitivity (A-375 and SK-Mel-147), moderate sensitivity (Mel-HO, SK-Mel-13, and SK-Mel-28), and permanent resistance (MeWo, Mel-2a, and SK-Mel-103), as well as in TRAIL-selected cell lines with acquired resistance (A-375-TS and Mel-HO-TS). Despite only moderate direct effects of L-779450 on apoptosis, it strongly enhances TRAIL-induced apoptosis in sensitive melanoma cells and overrules TRAIL resistance in Mel-2a, SK-Mel-103, A-375-TS, and Mel-HO-TS. At 24 hours, 16-35% apoptosis induction is obtained[3].
Cell Assay For induction of apoptosis, TRAIL (20 ng/mL), the pan-RAF inhibitor L-779450 (0.1-50 μM), the MEK inhibitor U0126 (20 μM), and the selective BRAF(V600E) inhibitor Vemurafenib/PLX4032 are used. For continuous monitoring cell growth, the xCELLigence system is applied. Relative cell indices correspond to attached cell numbers. Cell cycle analyses are performed for quantification of apoptosis and cell cycle arrest. Cells harvested by trypsinization are stained for 1 hour with propidium iodide (200 mg/mL), and sub-G1 fractions, corresponding to cells with fragmented DNA, are quantified by flow cytometry[3].
References

[1]. Takle AK, et al. The identification of potent, selective and CNS penetrant furan-based inhibitors of B-Raf kinase. Bioorg Med Chem Lett. 2008 Aug 1;18(15):4373-6.

[2]. Shelton JG, et al. Differential effects of kinase cascade inhibitors on neoplastic and cytokine-mediated cell proliferation. Leukemia. 2003 Sep;17(9):1765-82.

[3]. Berger A, et al. RAF inhibition overcomes resistance to TRAIL-induced apoptosis in melanoma cells. J Invest Dermatol. 2014 Feb;134(2):430-440.

 Chemical & Physical Properties

Density 1.335g/cm3
Boiling Point 579.783ºC at 760 mmHg
Molecular Formula C20H14ClN3O
Molecular Weight 347.79800
Flash Point 304.442ºC
Exact Mass 347.08300
PSA 61.80000
LogP 5.16470
Index of Refraction 1.671
Storage condition Store at +4°C

 Safety Information

Symbol GHS06
GHS06
Signal Word Danger
Hazard Statements H301-H315-H319-H335
Precautionary Statements P280-P301 + P310 + P330-P304 + P340 + P312-P305 + P351 + P338-P337 + P313
RIDADR UN 2811 6.1 / PGIII
HS Code 2933990090

 Customs

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

Chlormethiazole hydrochloride
L-779450
2-(Phenyl)-4-(3-hydroxy-4-chlorophenyl)-5-(4-pyridyl)-1H-imidazole
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