| Size | Price | Stock | Qty |
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| 5g |
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| Other Sizes |
| Targets |
As an amino acid derivative, Methyl acetyl-L-cysteinate does not have a defined primary drug target in the context of therapeutic development. However, as a protected cysteine derivative, it may be used in research to study cysteine metabolism, redox biology, and enzyme-substrate interactions. Cysteine is a sulfur-containing amino acid that plays critical roles in protein structure through disulfide bond formation, redox regulation, and metal ion coordination. The acetyl and methyl ester protecting groups allow for selective deprotection under different conditions, which is a key feature in peptide synthesis. The compound can serve as a building block for synthesizing cysteine-containing peptides.
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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].
In vitro studies on amino acid derivatives, including this cysteine analogue, have demonstrated their capacity to influence the release of anabolic hormones, modulate fuel availability for cellular activity, enhance mental performance under stress-related conditions, and prevent exercise-induced muscle damage. As a cysteine derivative, this compound may be used in cell-based assays to investigate cysteine transport, glutathione synthesis, and the effects of cysteine derivatives on cellular redox status. The compound can also be utilized in studies examining the role of cysteine in protein folding and disulfide bond formation. |
| ln Vivo |
In vivo studies on amino acid derivatives have shown that 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. As a protected cysteine derivative, this compound may be administered in animal studies to evaluate the effects of cysteine supplementation or to study the pharmacokinetics and bioavailability of cysteine derivatives. However, specific in vivo pharmacological data for this exact compound remains limited, as it is primarily supplied as a research chemical for peptide synthesis rather than as a therapeutic agent.
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| Enzyme Assay |
Non-cell-based enzyme or receptor binding assays for this compound typically involve enzymatic studies using purified enzymes such as cysteine proteases or glutathione-related enzymes. Standard protocols include incubating varying concentrations of the test compound with the enzyme source in appropriate buffer systems, followed by measurement of enzymatic activity using spectrophotometric or chromatographic detection methods. For peptide synthesis applications, the compound is evaluated in coupling reactions using standard peptide synthesis chemistry to assess reactivity and coupling efficiency. The acetyl group can be removed under mild basic conditions, while the methyl ester can be hydrolyzed under basic conditions.
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| Cell Assay |
Cell-based assays for this cysteine derivative typically utilize mammalian cell lines to evaluate compound uptake, cytotoxicity, and effects on cellular metabolism. Standard protocols involve culturing cells in appropriate media at 37°C in 5% CO₂, followed by treatment with varying concentrations of the compound (typically 0.1-100 μM) for 24-72 hours. Cell viability is assessed using MTT or CCK-8 assays. The compound's effects on glutathione levels and oxidative stress can be measured using fluorometric or colorimetric assays. For peptide synthesis applications, the compound is used as a building block.
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| Animal Protocol |
In vivo animal studies for amino acid derivatives typically involve administration via oral gavage, intraperitoneal injection, or intravenous injection in rodent models (mice or rats). Standard protocols include dosing at ranges of 10-100 mg/kg body weight, with observations over 1-14 days depending on the study objectives. For studies evaluating the effects of cysteine derivatives on antioxidant status, animals may be administered the compound and monitored for changes in glutathione levels and oxidative stress markers. Pharmacodynamic assessments may include blood sampling for glutathione analysis, tissue collection for histopathological examination, and monitoring of body weight. All animal studies must comply with institutional ethical guidelines.
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| ADME/Pharmacokinetics |
Pharmacokinetic properties for this cysteine ester can be inferred from structurally related compounds. As a small molecule (molecular weight 177.22 g/mol), it is expected to have reasonable oral bioavailability. The acetyl and methyl ester groups are likely to be cleaved in vivo to release the active cysteine. The compound shows moderate solubility in organic solvents and aqueous solutions. For in vivo administration, formulations using suitable vehicles may be employed. The compound should be stored as powder at -20°C for long-term preservation. Definitive PK parameters such as half-life, Cmax, and AUC require formal studies.
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| Toxicity/Toxicokinetics |
Toxicological data for this specific compound are limited as it is supplied for research use only and not intended for human therapeutic applications. Cysteine derivatives in general are considered to have low inherent toxicity based on their natural amino acid origins. However, as with all research chemicals, appropriate safety precautions should be observed during handling, including the use of personal protective equipment and work in well-ventilated areas. The compound may cause skin and eye irritation upon contact. Acute toxicity studies in animal models would be required to establish LD₅₀ values and no-observed-adverse-effect levels. For in vitro cytotoxicity assessment, the compound can be tested in mammalian cell lines using standard MTT or LDH release assays.
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| References | |
| Additional Infomation |
Methyl acetyl-L-cysteinate is a cysteine derivative featuring an acetyl protecting group on the amino functionality and a methyl ester on the C-terminus. Cysteine is a sulfur-containing amino acid that plays critical roles in protein structure through disulfide bond formation, redox regulation, and metal ion coordination. This compound is used as a building block in peptide synthesis for introducing cysteine residues into peptide sequences with protected amino and carboxylate groups. It is not an approved drug and has not undergone clinical trials; it is strictly for research purposes.
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| Molecular Formula |
C6H11NO3S
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|---|---|
| Molecular Weight |
177.22
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| Exact Mass |
177.045
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| CAS # |
7652-46-2
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| PubChem CID |
6542158
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| Appearance |
White to off-white solid powder
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| Density |
1.2±0.1 g/cm3
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| Boiling Point |
326.4±32.0 °C at 760 mmHg
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| Melting Point |
77-81 ℃
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| Flash Point |
151.2±25.1 °C
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| Vapour Pressure |
0.0±0.7 mmHg at 25°C
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| Index of Refraction |
1.481
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| LogP |
0.17
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| Hydrogen Bond Donor Count |
2
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| Hydrogen Bond Acceptor Count |
4
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| Rotatable Bond Count |
4
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| Heavy Atom Count |
11
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| Complexity |
160
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| Defined Atom Stereocenter Count |
1
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| SMILES |
S([H])C([H])([H])[C@@]([H])(C(=O)OC([H])([H])[H])N([H])C(C([H])([H])[H])=O
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| InChi Key |
QTKAQJWFVXPIFV-YFKPBYRVSA-N
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| InChi Code |
InChI=1S/C6H11NO3S/c1-4(8)7-5(3-11)6(9)10-2/h5,11H,3H2,1-2H3,(H,7,8)/t5-/m0/s1
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| Chemical Name |
methyl (2R)-2-acetamido-3-sulfanylpropanoate
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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 Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture. |
| 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) |
DMSO: 100 mg/mL (564.27 mM)
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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 | 5.6427 mL | 28.2135 mL | 56.4270 mL | |
| 5 mM | 1.1285 mL | 5.6427 mL | 11.2854 mL | |
| 10 mM | 0.5643 mL | 2.8214 mL | 5.6427 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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