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L-Leucinamide hydrochloride

Cat No.:V61933 Purity: ≥98%
L-Leucinamide (HCl) is an amino acid (AA) analogue with anti~inflammatory effects.
L-Leucinamide hydrochloride
L-Leucinamide hydrochloride Chemical Structure CAS No.: 10466-61-2
Product category: Biochemical Assay Reagents
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
L-Leucinamide (HCl) is an amino acid (AA) analogue with anti~inflammatory effects.
L-Leucinamide hydrochloride is a derivative of the essential amino acid L-leucine, where the carboxyl group is converted to an amide and hydrochloride salt. Its molecular formula is C₆H₁₅ClN₂O, with a molecular weight of 166.65 g/mol. This white crystalline compound is soluble in water and ethanol. It is primarily used as a chemical intermediate in peptide synthesis, particularly for introducing leucine residues into peptides via solid-phase or solution-phase chemistry. It also serves as a substrate for enzymatic assays, such as leucine aminopeptidase, and as a reference standard in amino acid analysis.
Biological Activity I Assay Protocols (From Reference)
Targets
None; it is a chemical reagent with no inherent pharmacological activity. It does not bind to receptors or enzymes in a biologically meaningful way, except as a substrate for peptidases that cleave the amide bond.
ln Vitro
As a substrate, L-leucinamide hydrochloride is hydrolyzed by leucine aminopeptidase to release L-leucine and ammonia. In vitro, it does not exhibit any cytotoxic, anti-inflammatory, or other pharmacological effects at typical concentrations used in peptide synthesis. It may be used in enzyme kinetics studies to determine Michaelis-Menten parameters of aminopeptidases.
ln Vivo
Not applicable; this compound is not administered in vivo for therapeutic purposes. If ingested, it would be metabolized to leucine, but no pharmacological action is expected. It is not used in animal models for disease treatment.
Enzyme Assay
For leucine aminopeptidase activity assay, the compound is dissolved in Tris-HCl buffer (pH 8.5) at 1-10 mM. Enzyme is added, and hydrolysis is monitored by measuring ammonia production using Nessler's reagent or by HPLC detection of leucine. Kinetic parameters (Km, Vmax) are calculated from Lineweaver-Burk plots. Standard chemical purity is assessed by HPLC and melting point determination.
Cell Assay
Not applicable; this compound is not used in cell culture experiments. However, it could be included in media as a source of leucine for metabolic studies, but its amide form is not preferred over free amino acid. Cytotoxicity testing is not relevant.
Animal Protocol
Not applicable; no animal studies are conducted with this compound as a test substance. It may be used as a precursor in the synthesis of peptide drugs that are then tested in vivo, but the compound itself is not directly administered.
ADME/Pharmacokinetics
If administered orally, L-leucinamide hydrochloride would likely be rapidly hydrolyzed by intestinal peptidases to L-leucine, which is absorbed and incorporated into protein metabolism. The amide form may improve stability during peptide synthesis but has no distinct pharmacokinetic profile of its own.
Toxicity/Toxicokinetics
Generally regarded as safe at low doses; it is a simple amino acid derivative. Acute toxicity is low; oral LD₅₀ in rats is expected to be >2000 mg/kg. Skin and eye irritation may occur with direct contact. No carcinogenic or mutagenic effects are known. Standard laboratory handling with gloves and goggles is sufficient.
References
[1]. Madan BR, et al. Effect of L-leucinamide hydrochloride on experimental inflammation. Res Commun Chem Pathol Pharmacol. 1987 Dec;58(3):393-6.
Additional Infomation
L-Leucinamide hydrochloride is a routine biochemical reagent. It is not a drug candidate but an important building block for pharmaceutical peptide synthesis. Its stability and solubility make it convenient for coupling reactions. It is also used as a chiral standard in capillary electrophoresis and as a precursor for preparing leucine-based coordination compounds. Available for research and manufacturing use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C6H15CLN2O
Molecular Weight
166.65
Exact Mass
166.087
CAS #
10466-61-2
PubChem CID
2733199
Appearance
White to off-white solid powder
Density
0.98g/cm3
Boiling Point
250.9ºC at 760mmHg
Melting Point
254-256ºC
Flash Point
105.6ºC
Vapour Pressure
0.0211mmHg at 25°C
LogP
2.047
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
3
Heavy Atom Count
10
Complexity
101
Defined Atom Stereocenter Count
1
SMILES
Cl[H].O=C([C@]([H])(C([H])([H])C([H])(C([H])([H])[H])C([H])([H])[H])N([H])[H])N([H])[H]
InChi Key
VSPSRRBIXFUMOU-JEDNCBNOSA-N
InChi Code
InChI=1S/C6H14N2O.ClH/c1-4(2)3-5(7)6(8)9;/h4-5H,3,7H2,1-2H3,(H2,8,9);1H/t5-;/m0./s1
Chemical Name
(2S)-2-amino-4-methylpentanamide;hydrochloride
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 6.0006 mL 30.0030 mL 60.0060 mL
5 mM 1.2001 mL 6.0006 mL 12.0012 mL
10 mM 0.6001 mL 3.0003 mL 6.0006 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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