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Merck

SML1938

LY450139

≥98% (HPLC)

Synonym(s):

(2S)-2-Hydroxy-3-methyl-N-[(1S)-1-methyl-2-oxo-2-[[(1S)-2,3,4,5-tetrahydro-3-methyl-2-oxo-1H-3-benzazepin-1-yl]amino]ethyl]-butanamide, LY 450139, LY-450139, Semagacestat

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About This Item

Empirical Formula (Hill Notation):
C19H27N3O4
CAS Number:
425386-60-3
Molecular Weight:
361.44
UNSPSC Code:
12352200
NACRES:
NA.77
MDL number:
MFCD09970409

Product Name

LY450139, ≥98% (HPLC)

InChI

1S/C19H27N3O4/c1-11(2)16(23)18(25)20-12(3)17(24)21-15-14-8-6-5-7-13(14)9-10-22(4)19(15)26/h5-8,11-12,15-16,23H,9-10H2,1-4H3,(H,20,25)(H,21,24)/t12-,15-,16-/m0/s1

SMILES string

O=C([C@@H](NC([C@@H](O)C(C)C)=O)C)N[C@@H](C1=CC=CC=C1CCN2C)C2=O

InChI key

PKXWXXPNHIWQHW-RCBQFDQVSA-N

assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 20 mg/mL, clear

storage temp.

2-8°C

Quality Level

100

Related Categories

Biochem/physiol Actions

LY450139 (Semagacestat) is a notch-sparing, potent and selective gamma-secretase inhibitor. LY450139 lowers plasma and cerebrospinal fluid Aβ in humans.
Notch-sparing, potent and selective gamma-secretase inhibitor and inverse modulator of Aβ

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
057M4731V
0000016766
0000016767

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Julie Colin et al.
Journal of Alzheimer's disease : JAD, 52(3), 975-987 (2016-05-11)
Oligomeric amyloid-β (Aβ) peptide contributes to impaired synaptic connections and neurodegenerative processes, and as such, represents a primary therapeutic target for Alzheimer's disease (AD)-modifying approaches. However, the lack of efficacy of drugs that inhibit production of Aβ demonstrates the need
Jonathan D Best et al.
The Journal of pharmacology and experimental therapeutics, 313(2), 902-908 (2005-03-04)
The efficacy of gamma-secretase inhibitors in vivo has, to date, been generally assessed in transgenic mouse models expressing increased levels of amyloid-beta (Abeta) peptide thereby allowing the detection of changes in Abeta production. However, it is not clear whether the
Vito Antonio Baldassarro et al.
Disease models & mechanisms, 10(5), 671-678 (2017-02-27)
Microvascular dysfunction is considered an integral part of Alzheimer disease (AD) pathogenesis, but the possible relationship between amyloid pathology, microvascular dysfunction and cell death is still unclear. In order to investigate the influence of intraneuronal amyloid-β (Aβ) accumulation on vulnerability
Peter S B Finnie et al.
Current biology : CB, 30(10), 1934-1940 (2020-04-04)
Memory allows organisms to predict future events based on their prior sampling of the world. Rather than faithfully encoding each detail of related episodes, the brain is thought to incrementally construct probabilistic estimates of environmental statistics that are re-evaluated each

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