2. Neuronal Signaling
  3. Amyloid-β
  4. β-Amyloid (12-28) (TFA)

β-Amyloid (12-28) (TFA)  (Synonyms: Amyloid β-Protein (12-28) (TFA); Amyloid Beta-Peptide (12-28) (human) TFA; β-Amyloid protein fragment(12-28) TFA)

Cat. No.: HY-P1051A Purity: 99.80%
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β-Amyloid (12-28) (TFA) (Amyloid β-Protein (12-28) (TFA)) is a peptide fragment of β-amyloid protein (β1-42). β1-42, a 42 amino acid protein , is the major component of senile plaque cores. β-Amyloid (12-28) (TFA) shows aggregation properties. β-Amyloid (12-28) (TFA) has the potential for Alzheimer’s disease research.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

β-Amyloid (12-28) (TFA) Chemical Structure

β-Amyloid (12-28) (TFA) Chemical Structure

Size Price Stock Quantity
1 mg USD 70 In-stock
5 mg USD 210 In-stock
10 mg USD 320 In-stock
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100 mg   Get quote  

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Based on 1 publication(s) in Google Scholar

Other Forms of β-Amyloid (12-28) (TFA):

β-Amyloid (12-28) (TFA) Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

β-Amyloid (12-28) (TFA) (Amyloid β-Protein (12-28) (TFA)) is a peptide fragment of β-amyloid protein (β1-42). β1-42, a 42 amino acid protein , is the major component of senile plaque cores. β-Amyloid (12-28) (TFA) shows aggregation properties. β-Amyloid (12-28) (TFA) has the potential for Alzheimer’s disease research[1].

In Vitro

β-amyloid (12-28) may exert dysregulation cognitive effects by means of defective coordination of potassium channel function in nerve, glia and endothelial cells[1].
β-Amyloid Aggregation Guidelines (Following is our recommended protocol. This protocol only provides a guideline, and should be modified according to your specific needs).
1. Solid Aβ peptide was dissolved in cold hexafluoro-2-propanol (HFIP). The peptide was incubated at room temperature for at least 1h to establish monomerization and randomization of structure.
2. The HFIP was removed by evaporation, and the resulting peptide was stored as a film at -20 or -80 ℃.
3. The resulting film was dissolved in anhydrous DMSO at 5 mM and then diluted into the appropriate concentration and buffer (serum- and phenol red-free culture medium) with vortexing.
4. Next, the solution was age 48h at 4-8 ℃. The sample was then centrifuged at 14000g for 10 min at 4-8 ℃; the soluble oligomers were in the supernatant. The supernatant was diluted 10-200-fold for experiments.
Methods vary depends on the downstream applications.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

β-Amyloid (12-28) (TFA) Related Antibodies
Molecular Weight

2069.20

Formula

C91H136N25F3O27
Appearance

Solid

Color

White to off-white

Sequence

Val-His-His-Gln-Lys-Leu-Val-Phe-Phe-Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys
Sequence Shortening

VHHQKLVFFAEDVGSNK
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

*The compound is unstable in solutions, freshly prepared is recommended.

Solvent & Solubility
In Vitro: 

DMSO : 120 mg/mL (57.99 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.4833 mL 2.4164 mL 4.8328 mL
5 mM 0.0967 mL 0.4833 mL 0.9666 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 3 mg/mL (1.45 mM); Clear solution

    This protocol yields a clear solution of ≥ 3 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (30.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 3 mg/mL (1.45 mM); Clear solution

    This protocol yields a clear solution of ≥ 3 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (30.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).

*The compound is unstable in solutions, freshly prepared is recommended.

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 0.4833 mL 2.4164 mL 4.8328 mL 12.0820 mL
5 mM 0.0967 mL 0.4833 mL 0.9666 mL 2.4164 mL
10 mM 0.0483 mL 0.2416 mL 0.4833 mL 1.2082 mL
15 mM 0.0322 mL 0.1611 mL 0.3222 mL 0.8055 mL
20 mM 0.0242 mL 0.1208 mL 0.2416 mL 0.6041 mL
25 mM 0.0193 mL 0.0967 mL 0.1933 mL 0.4833 mL
30 mM 0.0161 mL 0.0805 mL 0.1611 mL 0.4027 mL
40 mM 0.0121 mL 0.0604 mL 0.1208 mL 0.3020 mL
50 mM 0.0097 mL 0.0483 mL 0.0967 mL 0.2416 mL
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β-Amyloid (12-28) (TFA) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

β-Amyloid (12-28) (TFA)Amyloid β-Protein (12-28) (TFA)Amyloid Beta-Peptide (12-28) (human)β-Amyloid protein fragment(12-28)Amyloid-ββ-amyloid peptideAβAbetapeptidecytotoxicityAlzheimerdiseaseInhibitorinhibitorinhibit

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