182912-74-9

182912-74-9 structure

Name: (Pro18,Asp21)-Amyloid β-Protein (17-21) trifluoroacetate salt
Chemical Name: (2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-1-[(2S)-2-amino-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]butanedioic acid
CAS Number: 182912-74-9
Molecular Formula: C₃₃H₄₃N₅O₈
Molecular Weight: 637.72
Catalog: Research Areas Neurological Disease
Create Date: 2018-12-20 10:25:35
Modify Date: 2024-01-03 17:09:10
β-Sheet Breaker Peptide iAβ5 is a potent degrader of cerebral amyloid-beta (Abeta). Abeta deposition is associatied with the Alzheimer disease (AD), due to its related toxicity linked to its beta-sheet conformation and/or aggregation. β-Sheet Breaker Peptide iAβ5 reproducibly induces in vivo disassembly of fibrillar amyloid deposits. Thus, β-Sheet Breaker Peptide iAβ5 prevents and/or reverses neuronal shrinkage caused by Abeta, and reduces the extent of interleukin-1beta positive microglia-like cells that surround the Abeta deposits. β-Sheet Breaker Peptide iAβ5 reduces the size and/or number of cerebral amyloid plaques in AD. β-Sheet Breaker Peptide iAβ5 labeled by hydrophobic benzyl alcohol (HBA) tag, can be used for quantitative assay by showing vivid blue color under acidic conditions[1][2][3].

Name	(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-1-[(2S)-2-amino-4-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]butanedioic acid

Description	β-Sheet Breaker Peptide iAβ5 is a potent degrader of cerebral amyloid-beta (Abeta). Abeta deposition is associatied with the Alzheimer disease (AD), due to its related toxicity linked to its beta-sheet conformation and/or aggregation. β-Sheet Breaker Peptide iAβ5 reproducibly induces in vivo disassembly of fibrillar amyloid deposits. Thus, β-Sheet Breaker Peptide iAβ5 prevents and/or reverses neuronal shrinkage caused by Abeta, and reduces the extent of interleukin-1beta positive microglia-like cells that surround the Abeta deposits. β-Sheet Breaker Peptide iAβ5 reduces the size and/or number of cerebral amyloid plaques in AD. β-Sheet Breaker Peptide iAβ5 labeled by hydrophobic benzyl alcohol (HBA) tag, can be used for quantitative assay by showing vivid blue color under acidic conditions[1][2][3].
Related Catalog	Research Areas >> Neurological Disease
In Vitro	β-Sheet Breaker Peptide iAβ5 (1.5 μg/μL；7 天) 与 Aβ1-42 (0.5 μg/μL) 孵育 7 天，抑制淀粉样蛋白 β 蛋白原纤维形成，在体外分解预先形成的原纤维，并防止细胞培养中原纤维诱导的神经元死亡[1]。 β-Sheet Breaker Peptide iAβ5 (60 μM；48 小时) 在用 50 μM 聚集的 Aβ1-42 处理 2 天的人神经母细胞瘤 (IMR-32) 细胞中显示出不显着的细胞毒性[1]。
In Vivo	β-Sheet Breaker Peptide iAβ5 (100 nmol/大鼠；杏仁核内注射；7 天) 与 Aβ1-42 (5 nmol) 共同注射到大鼠杏仁核中，阻断组织培养中的 Aβ1-42 神经毒性，以及大鼠模型中淀粉样原纤维的形成[1]。 β-Sheet Breaker Peptide iAβ5 (100 nmol/大鼠，200 nmol/大鼠；杏仁核内注射；7 天) 在 Aβ1-42 (5 nmol) 处理后注射，诱导体内预先存在的 Aβ 原纤维的分解，并导致逆转或预防 Aβ 诱导的大鼠模型组织病理学改变[2]。
References	[1]. Soto C, et al. Beta-sheet breaker peptides inhibit fibrillogenesis in a rat brain model of amyloidosis: implications for Alzheimer's therapy. Nat Med. 1998 Jul;4(7):822-6. [2]. Sigurdsson EM, et al. In vivo reversal of amyloid-beta lesions in rat brain. J Neuropathol Exp Neurol. 2000 Jan;59(1):11-7. [3]. Okada Y, et al. Acid-Triggered Colorimetric Hydrophobic Benzyl Alcohols for Soluble Tag-Assisted Liquid-Phase Synthesis. Org Lett. 2015 Sep 4;17(17):4264-7.

Molecular Formula	C₃₃H₄₃N₅O₈
Molecular Weight	637.72
Exact Mass	637.31100
PSA	208.23000
LogP	2.66080

Version 1.2
Regulation (EC) No 1907/2006

1 - Product and Company Information

Product Name(PRO18,ASP21)AMYLOID BETA PROTEIN
FRAGMENT (17-21)

2 - Hazards Identification

SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Not hazardous according to Directive 67/548/EEC.

3 - Composition/Information on Ingredients

Product NameCAS #EC noAnnex I
Index Number
(PRO18,ASP21)AMYLOID BETA PROTEIN 182912-74-9 NoneNone
FRAGMENT (17-21)
FormulaC33H43N5O8
Molecular Weight 637,7300 AMU
SynonymsH-Leu-Pro-Phe-Phe-Asp-OH

4 - First Aid Measures

AFTER INHALATION
If inhaled, remove to fresh air. If breathing becomes difficult,
call a physician.
AFTER SKIN CONTACT
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.
AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician.
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5 - Fire Fighting Measures

EXTINGUISHING MEDIA
Suitable: Water spray. Carbon dioxide, dry chemical powder, or
appropriate foam.
SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.

6 - Accidental Release Measures

PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area.
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear respirator, chemical safety goggles, rubber boots, and
heavy rubber gloves.
METHODS FOR CLEANING UP
Sweep up, place in a bag and hold for waste disposal. Avoid
raising dust. Ventilate area and wash spill site after material
pickup is complete.

7 - Handling and Storage

HANDLING
Directions for Safe Handling: Avoid inhalation. Avoid contact
with eyes, skin, and clothing. Avoid prolonged or repeated
exposure.
STORAGE
Conditions of Storage: Keep tightly closed.
Store at -20°C

8 - Exposure Controls / Personal Protection

ENGINEERING CONTROLS
Mechanical exhaust required.
GENERAL HYGIENE MEASURES
Wash thoroughly after handling.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Use respirators and components tested and
approved under appropriate government standards such as NIOSH (US)
or CEN (EU). Where risk assessment shows air-purifying respirators
are appropriate use a dust mask type N95 (US) or type P1 (EN 143)
respirator.
Special Protective Measures: Wear appropriate government approved
respirator, chemical-resistant gloves, safety goggles, other
protective clothing.

9 - Physical and Chemical Properties

AppearancePhysical State: Solid
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PropertyValueAt Temperature or Pressure
pH N/A
BP/BP RangeN/A
MP/MP RangeN/A
Flash PointN/A
FlammabilityN/A
Autoignition TempN/A
Oxidizing Properties N/A
Explosive Properties N/A
Explosion LimitsN/A
Vapor PressureN/A
Partition Coefficient N/A
ViscosityN/A
Vapor DensityN/A
Saturated Vapor Conc. N/A
Evaporation RateN/A
Bulk DensityN/A
Decomposition Temp.N/A
Solvent ContentN/A
Water ContentN/A
Surface TensionN/A
ConductivityN/A
Miscellaneous DataN/A
SolubilityN/A

10 - Stability and Reactivity

STABILITY
Stable: Stable.
Materials to Avoid: Strong acids, Strong bases.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide,
Nitrogen oxides.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur

11 - Toxicological Information

ROUTE OF EXPOSURE
Skin Contact: May cause skin irritation.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: May cause eye irritation.
Inhalation: Material may be irritating to mucous membranes and
upper respiratory tract. May be harmful if inhaled.
Ingestion: May be harmful if swallowed.
CONDITIONS AGGRAVATED BY EXPOSURE
The toxicological properties have not been thoroughly
investigated.

12 - Ecological Information

No data available.

13 - Disposal Considerations

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SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. Dissolve or mix the material with a combustible
solvent and burn in a chemical incinerator equipped with an
afterburner and scrubber. Observe all federal, state, and local
environmental regulations.

14 - Transport Information

RID/ADR
Non-hazardous for road transport.
IMDG
Non-hazardous for sea transport.
IATA
Non-hazardous for air transport.

15 - Regulatory Information

CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
S-PHRASES: 22-24/25
Do not breathe dust. Avoid contact with skin and eyes.
Not hazardous according to Directive 67/548/EEC.
Caution: Substance not yet fully tested (EU).
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 3
Self-Classification

16 - Other Information

WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2010 Co. License granted to make
unlimitedpaper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
SIGMAwww.molbase.com

SECTION 16 - ADDITIONAL INFORMATION
N/A

Safety Phrases	22-24/25
WGK Germany	3

1158522-08-7	940364-43-2
134104-43-1	131615-57-1
6906-52-1	1396812-85-3
1846567-72-3	930439-75-1
1018584-77-4	1375289-11-4