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SML2903

Sigma-Aldrich

KIRA8

≥98% (HPLC)

Synonym(s):

(S)-2-Chloro-N-(6-methyl-5-((3-(2-(piperidin-3-ylamino)pyrimidin-4-yl)pyridin-2-yl)oxy)naphthalen-1-yl)benzenesulfonamide, 2-Chloro-N-[6-methyl-5-[[3-[2-[(3S)-3-piperidinylamino]-4-pyrimidinyl]-2-pyridinyl]oxy]-1-naphthalenyl]benzenesulfonamide, AMG 18, AMG-18, AMG18, Compound 18, IRE1α Kinase-Inhibiting RNase Attenuator 8

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About This Item

Empirical Formula (Hill Notation):
C31H29ClN6O3S
CAS Number:
1630086-20-2
Molecular Weight:
601.12
MDL number:
MFCD28404657
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.

2-8°C

Biochem/physiol Actions

KIRA8 is an ATP-competitive, potent and selective IRE1α kinase inhibitor (IRE1α/β Ki = 2/120 nM) that attenuates IRE1α endonuclease activity (IRE1α/β IC50 = 5/55 nM) with good kinome selectivity. KIRA8 inhibits thapsigargin-induced UPR (IC50 = 99 nM; HT1080 XBP1-Luc cells) and shows therapeutic efficacy in murine models of type 1 diabetes (T1D), pulmonary fibrosis, multiple myeloma (MM), and pancreatic neuroendocrine tumors (PanNET) in vivo (30-50 mg/kg/day i.p.).

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

Certificates of Analysis (COA)

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Hannah C Feldman et al.
ACS chemical biology, 14(12), 2595-2605 (2019-10-15)
The dual kinase endoribonuclease IRE1 is a master regulator of cell fate decisions in cells experiencing endoplasmic reticulum (ER) stress. In mammalian cells, there are two paralogs of IRE1: IRE1α and IRE1β. While IRE1α has been extensively studied, much less
[Detection of papillomavirus types 6/11, 16/18 and 31/33/35 using DNA/RNA hybridization. Initial experiences].
B Wartusch et al.
Gynakologische Rundschau, 29 Suppl 2, 402-404 (1989-01-01)
Shuhei Morita et al.
Cell metabolism, 25(4), 883-897 (2017-04-06)
In cells experiencing unrelieved endoplasmic reticulum (ER) stress, the ER transmembrane kinase/endoribonuclease (RNase)-IRE1α-endonucleolytically degrades ER-localized mRNAs to promote apoptosis. Here we find that the ABL family of tyrosine kinases rheostatically enhances IRE1α's enzymatic activities, thereby potentiating ER stress-induced apoptosis. During
Maike Thamsen et al.
PloS one, 14(1), e0209824-e0209824 (2019-01-10)
Endoplasmic reticulum stress (ER stress) has been implicated in the pathogenesis of idiopathic pulmonary fibrosis (IPF), a disease of progressive fibrosis and respiratory failure. ER stress activates a signaling pathway called the unfolded protein response (UPR) that either restores homeostasis
Jonathan M Harnoss et al.
Proceedings of the National Academy of Sciences of the United States of America, 116(33), 16420-16429 (2019-08-03)
Multiple myeloma (MM) arises from malignant immunoglobulin (Ig)-secreting plasma cells and remains an incurable, often lethal disease despite therapeutic advances. The unfolded-protein response sensor IRE1α supports protein secretion by deploying a kinase-endoribonuclease module to activate the transcription factor XBP1s. MM
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