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Merck
모든 사진(1)

Key Documents

SML1954

Sigma-Aldrich

X-34

≥90% (HPLC), powder, amyloid-specific fluorescent dye

동의어(들):

1,4-Bis(3-carboxy-4-hydroxyphenylethenyl)benzene

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About This Item

실험식(Hill 표기법):
C24H18O6
CAS Number:
Molecular Weight:
402.40
MDL number:
UNSPSC 코드:
12352200
NACRES:
NA.77

product name

X-34, ≥90% (HPLC)

Quality Level

분석

≥90% (HPLC)

형태

powder

색상

white to beige

solubility

DMSO: 2.0 mg/mL, clear

저장 온도

2-8°C

SMILES string

OC(C=C1)=C(C(O)=O)C=C1C=CC2=CC=C(C=CC3=CC=C(O)C(C(O)=O)=C3)C=C2

생화학적/생리학적 작용

Fluorescent, amyloid-specific dye
X-34 (1,4-bis(3-carboxy-4-hydroxyphenylethenyl)-benzene) is one among the small-molecule γ-secretase modulators (GSMs) involved in lowering Aβ42 levels (the 42-residue isoform of the amyloid-β peptide). X-34 has also been used to visualize intracellular immunoreactive deposits with classic amyloid fibrillar ultrastructure in living transgenic Caenorhabditis elegans animals. It is also used as a histochemical stain for determining pathological changes in Alzheimer′s disease (AD).
X-34 is a fluorescent, amyloid-specific dye. It binds at a different site than Pittsburgh Compound B and is a highly fluorescent marker for beta-sheet structures.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable


시험 성적서(COA)

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문서 라이브러리 방문

S D Styren et al.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 48(9), 1223-1232 (2000-08-19)
X-34, a lipophilic, highly fluorescent derivative of Congo red, was examined as a histochemical stain for pathological changes in Alzheimer's disease (AD). X-34 intensely stained neuritic and diffuse plaques, neurofibrillary tangles (NFTs), neuropil threads, and cerebrovascular amyloid. Comparison to standard
Visualization of fibrillar amyloid deposits in living, transgenic Caenorhabditis elegans animals using the sensitive amyloid dye, X-34
Link CD
Neurobiology of Aging, 22, 217-226 (2001)
Marcus Bäck et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 22(51), 18335-18338 (2016-11-04)
Deposits comprised of amyloid-β (Aβ) are one of the pathological hallmarks of Alzheimer's disease (AD) and small hydrophobic ligands targeting these aggregated species are used clinically for the diagnosis of AD. Herein, we observed that anionic oligothiophenes efficiently displaced X-34
Substrate-targeting ?-secretase modulators
Kukar TL
Nature, 453, 925-929 (2008)
Heidi Olzscha et al.
Cell chemical biology, 24(1), 9-23 (2016-12-19)
Lysine acetylation is becoming increasingly recognized as a general biological principle in cellular homeostasis, and is subject to abnormal control in different human pathologies. Here, we describe a global effect on amyloid-like protein aggregation in human cells that results from

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