2. Metabolic Enzyme/Protease
  3. Endogenous Metabolite
  4. L-Leucyl-L-Leucine methyl ester hydrobromide

L-Leucyl-L-Leucine methyl ester hydrobromide  (Synonyms: LLOMe hydrobromide; Leu-Leu methyl ester hydrobromide; H-Leu-Leu-OMe hydrobromide)

Cat. No.: HY-129905A Purity: 98.76%
COA Handling Instructions

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L-Leucyl-L-Leucine methyl ester (LLOMe) hydrobromide, a dipeptide condensation product of L-leucine methyl ester generated by human monocytes or polymorphonuclear leukocytes, selectively eliminates lymphocytes with cytotoxic potential. L-Leucyl-L-Leucine methyl ester hydrobromide also can induce endolysosomal pathway stress.

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L-Leucyl-L-Leucine methyl ester hydrobromide Chemical Structure

L-Leucyl-L-Leucine methyl ester hydrobromide Chemical Structure

CAS No. : 16689-14-8

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Based on 6 publication(s) in Google Scholar

Other Forms of L-Leucyl-L-Leucine methyl ester hydrobromide:

L-Leucyl-L-Leucine methyl ester hydrobromide Related Antibodies

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  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

L-Leucyl-L-Leucine methyl ester (LLOMe) hydrobromide, a dipeptide condensation product of L-leucine methyl ester generated by human monocytes or polymorphonuclear leukocytes, selectively eliminates lymphocytes with cytotoxic potential. L-Leucyl-L-Leucine methyl ester hydrobromide also can induce endolysosomal pathway stress[1][2][3].

In Vitro

L-Leucyl-L-Leucine methyl ester (1 mM; 0.5-2 h) enhances LRRK2-mediated Rab10 and Rab12 phosphorylation in MEFs and A549 cells[3].
L-Leucyl-L-Leucine methyl ester (10-250 μM; 15 min) is converted to a CCI3COOH-insoluble product by CD4- lymphocytes[2].

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

L-Leucyl-L-Leucine methyl ester hydrobromide Related Antibodies
Molecular Weight

339.27

Formula

C13H27BrN2O3
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

CC(C)C[C@@H](C(OC)=O)NC([C@H](CC(C)C)N)=O.[H]Br
Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

Solvent & Solubility
In Vitro: 

DMSO : 125 mg/mL (368.44 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 100 mg/mL (294.75 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.9475 mL 14.7375 mL 29.4750 mL
5 mM 0.5895 mL 2.9475 mL 5.8950 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • 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: ≥ 2.08 mg/mL (6.13 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (6.13 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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:  PBS

    Solubility: 100 mg/mL (294.75 mM); Clear solution; Need ultrasonic

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.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
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).
Purity & Documentation

Purity: 98.98%

COA (247 KB) HNMR (258 KB) LCMS (91 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O / DMSO 1 mM 2.9475 mL 14.7375 mL 29.4751 mL 73.6876 mL
5 mM 0.5895 mL 2.9475 mL 5.8950 mL 14.7375 mL
10 mM 0.2948 mL 1.4738 mL 2.9475 mL 7.3688 mL
15 mM 0.1965 mL 0.9825 mL 1.9650 mL 4.9125 mL
20 mM 0.1474 mL 0.7369 mL 1.4738 mL 3.6844 mL
25 mM 0.1179 mL 0.5895 mL 1.1790 mL 2.9475 mL
30 mM 0.0983 mL 0.4913 mL 0.9825 mL 2.4563 mL
40 mM 0.0737 mL 0.3684 mL 0.7369 mL 1.8422 mL
50 mM 0.0590 mL 0.2948 mL 0.5895 mL 1.4738 mL
60 mM 0.0491 mL 0.2456 mL 0.4913 mL 1.2281 mL
80 mM 0.0368 mL 0.1842 mL 0.3684 mL 0.9211 mL
100 mM 0.0295 mL 0.1474 mL 0.2948 mL 0.7369 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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L-Leucyl-L-Leucine methyl ester hydrobromide 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:

L-Leucyl-L-Leucine methyl ester16689-14-8LLOMeLeu-Leu methyl esterH-Leu-Leu-OMeEndogenous MetabolitemonocytespolymorphonuclearleukocyteslymphocytescytotoxicendolysosomalpathwaystressInhibitorinhibitorinhibit

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