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SML1938

Sigma-Aldrich

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
MDL number:
MFCD09970409
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

100

Assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 20 mg/mL, clear

storage temp.

2-8°C

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

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

InChI key

PKXWXXPNHIWQHW-RCBQFDQVSA-N

Biochem/physiol Actions

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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
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
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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