| Size | Price | Stock | Qty |
|---|---|---|---|
| 100g |
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| Other Sizes |
| Targets |
This compound does not possess a specific biological target; its primary function is as a chemical building block for peptide synthesis. As a leucine derivative, it is used to introduce D-leucine residues into peptide chains, which can enhance peptide stability against enzymatic degradation and modulate biological activity. The Boc group serves as a temporary protecting group for the amino functionality, allowing for selective deprotection under acidic conditions (e.g., TFA) during Boc-SPPS workflows. This enables chemists to build complex peptides with specific sequences while preventing unwanted reactions. Amino acid and amino acid derivatives have been commercially used as ergogenic supplements.
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| ln Vitro |
Commercial ergot supplements have been made from amino acids and their derivatives. They affect the release of anabolic hormones, the availability of fuel for activity, the ability to think clearly under pressure, and the prevention of muscular damage brought on by exertion. They are regarded as advantageous synergistic food ingredients [1].
This compound is not a biological agent and does not exhibit direct in vitro biological activity in a pharmacological sense. Its value lies exclusively in its chemical utility as a protected amino acid building block for constructing D-leucine-containing peptides and proteins. Amino acids and amino acid derivatives have been commercially used as ergogenic supplements. Any biological activity would reside in the final deprotected peptide product synthesized using this building block, not in the protected intermediate itself. |
| ln Vivo |
Methyl (tert-butoxycarbonyl)-D-leucinate is not administered in vivo as a therapeutic agent. It is a research chemical utilized exclusively as a building block in peptide synthesis. The final deprotected peptide product, not this protected intermediate, would be the subject of in vivo pharmacological testing for therapeutic efficacy and safety. If a D-leucine-containing peptide shows promising biological activity in vitro, it could be advanced to animal studies, but the protected amino acid building block itself is never administered to animals as a test compound.
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| Enzyme Assay |
Non-cellular enzyme/receptor binding assays are not applicable to Methyl (tert-butoxycarbonyl)-D-leucinate as it is not biologically active. Its use is exclusively in organic synthesis and peptide chemistry. A typical protocol involves its use as a building block in Boc-SPPS or solution-phase peptide synthesis, where the Boc group is removed under acidic conditions (e.g., TFA) to reveal the free amino group for coupling with the next amino acid using standard coupling reagents. The methyl ester can be hydrolyzed under basic conditions to reveal the free carboxylic acid for further functionalization.
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| Cell Assay |
Methyl (tert-butoxycarbonyl)-D-leucinate is not used in cell-based assays as a therapeutic agent. Its applications are in synthetic chemistry and peptide synthesis. It is typically stored as a powder at -20°C for up to 3 years or at 4°C for up to 2 years; in solvent, it can be stored at -80°C for 6 months or at -20°C for 1 month. The compound is a solid with a molecular weight of 245.32 g/mol. It is soluble in common organic solvents such as DMF and DMSO. Purity is typically ≥98%.
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| Animal Protocol |
In vivo animal experiments do not involve Methyl (tert-butoxycarbonyl)-D-leucinate as a test article. It is a chemical intermediate used exclusively in the synthesis of peptide-based drug candidates. If a researcher synthesizes a therapeutic peptide containing D-leucine using this building block, that final deprotected and purified peptide product would be subjected to animal testing for pharmacokinetics, efficacy, and toxicity. The Boc-protected amino acid itself is never administered to animals as a test compound, as the protecting groups would interfere with any potential biological activity and could be toxic.
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| ADME/Pharmacokinetics |
Pharmacokinetic properties are not applicable to Methyl (tert-butoxycarbonyl)-D-leucinate as it is not a drug. It is a small molecule (MW 245.32 g/mol) with the formula C12H23NO4. Its properties are relevant for chemical handling and storage rather than for systemic exposure or ADME studies. The compound is not designed to be bioavailable, as the Boc and methyl ester protecting groups are intended to be removed during peptide synthesis to yield the final active peptide product.
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| Toxicity/Toxicokinetics |
The toxicity of Methyl (tert-butoxycarbonyl)-D-leucinate is not extensively documented, as it is a research chemical not intended for human or veterinary use. As with all Boc-protected amino acids, standard laboratory safety precautions should be followed, including handling in a well-ventilated area with appropriate personal protective equipment (gloves, lab coat, safety glasses). The compound should be stored as a powder at -20°C or below and protected from moisture. It is not intended for diagnostic, therapeutic, or other medical applications.
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| References |
[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144.
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| Additional Infomation |
Methyl (tert-butoxycarbonyl)-D-leucinate (Boc-D-leucine methyl ester) is a specialized building block for peptide synthesis that enables the incorporation of D-leucine into peptides and proteins. D-amino acids are increasingly used in peptide drug development to enhance proteolytic stability and modulate biological activity. Leucine is a hydrophobic amino acid important for protein-protein interactions and membrane binding. The Boc protecting group is widely used in Boc-SPPS and solution-phase peptide synthesis due to its stability under basic conditions and ease of removal under acidic conditions. This compound is not a pharmaceutical and has no clinical trials or approved therapeutic status.
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| Molecular Formula |
C12H23NO4
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|---|---|
| Molecular Weight |
245.32
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| Exact Mass |
245.163
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| CAS # |
133467-01-3
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| PubChem CID |
13995284
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| Appearance |
Colorless to light yellow liquid（Density：1.008 g/cm3）
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| LogP |
2.489
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| Hydrogen Bond Donor Count |
1
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| Hydrogen Bond Acceptor Count |
4
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| Rotatable Bond Count |
7
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| Heavy Atom Count |
17
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| Complexity |
268
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| Defined Atom Stereocenter Count |
1
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| SMILES |
CC(C)C[C@H](C(=O)OC)NC(=O)OC(C)(C)C
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| InChi Key |
QSEVMIMUBKMNOU-SECBINFHSA-N
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| InChi Code |
InChI=1S/C12H23NO4/c1-8(2)7-9(10(14)16-6)13-11(15)17-12(3,4)5/h8-9H,7H2,1-6H3,(H,13,15)/t9-/m1/s1
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| Chemical Name |
methyl (2R)-4-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoate
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| HS Tariff Code |
2934.99.9001
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| 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)
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| 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
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| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 ：Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 4.0763 mL | 20.3815 mL | 40.7631 mL | |
| 5 mM | 0.8153 mL | 4.0763 mL | 8.1526 mL | |
| 10 mM | 0.4076 mL | 2.0382 mL | 4.0763 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.
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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