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Stearamide

Cat No.:V50068 Purity: ≥98%
Stearamide is a primary fatty acid amide.
Stearamide
Stearamide Chemical Structure CAS No.: 124-26-5
Product category: New3
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
500mg
Other Sizes
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Product Description
Stearamide is a primary fatty acid amide. Stearamide is cytotoxic and fish toxic.
Stearamide (Stearic acid amide) (CAS#: 124-26-5) is a primary fatty acid amide that displays cytotoxic and ichthytoxic activity. It has a molecular formula of C18H37NO and a molecular weight of 283.49. Stearamide is also used as a lubricating agent in the polymer industry and as a corrosion inhibitor. Cellular studies indicate it can stimulate protein synthesis via the PI3K/Akt/mTOR pathway. The compound is available in high purity (≥97%) for research use. Stearamide is a research-grade reagent intended for non-human use only.
Biological Activity I Assay Protocols (From Reference)
Targets
Stearamide does not have a single defined molecular target but exhibits multiple biological activities. As a primary fatty acid amide, it may interact with cellular membranes and modulate signaling pathways. Cellular studies indicate that stearamide can stimulate protein synthesis via the PI3K/Akt/mTOR pathway. It displays cytotoxic activity in various cell types, suggesting potential interactions with cellular membranes or specific proteins involved in cell survival. The compound also exhibits ichthytoxic activity, indicating toxicity to fish. Its ability to form adsorption layers on metal surfaces underlies its use as a corrosion inhibitor. Further research is needed to identify its precise molecular targets.
ln Vitro
In vitro, stearamide displays cytotoxic activity in various cell types. Cellular studies indicate it can stimulate protein synthesis via the PI3K/Akt/mTOR pathway. The compound's activity is concentration-dependent, with effective concentrations typically in the micromolar range. Its cytotoxic effects have been characterized in cell-based assays, though detailed IC50 values for specific cell lines are limited in publicly available sources. Stearamide is also used as a lubricating agent in the polymer industry and as a corrosion inhibitor. Its in vitro biological activities make it a valuable tool for studying fatty acid amide biology and cellular signaling pathways.
ln Vivo
In vivo, stearamide exhibits ichthytoxic activity, indicating toxicity to fish. Its in vivo effects in mammals have not been extensively characterized, as the compound is primarily used as an industrial chemical and research reagent rather than a therapeutic candidate. The compound's potential to stimulate protein synthesis via the PI3K/Akt/mTOR pathway may have implications for studies of cellular metabolism and growth. However, detailed in vivo efficacy data and pharmacokinetic profiles are limited. The compound is for research use only and is not approved for human therapeutic applications.
Enzyme Assay
The in vitro cytotoxicity assay for stearamide typically uses various cancer cell lines or primary cells. Cells are seeded in 96-well plates and treated with varying concentrations of stearamide (typically 1 to 100 µM) for 24-72 hours. Cell viability is assessed using MTT, CCK-8, or CellTiter-Glo assays. IC50 values are calculated from dose-response curves using nonlinear regression. For protein synthesis studies, cells are treated with the compound and protein synthesis is measured by [³⁵S]-methionine incorporation or by using a fluorescent puromycin-based assay (e.g., SUnSET). PI3K/Akt/mTOR pathway activation is assessed by Western blotting for phosphorylated AKT, mTOR, and downstream targets such as S6K and 4E-BP1. Positive controls (e.g., known mTOR activators) and negative controls (DMSO vehicle) are included in each assay run.
Cell Assay
For in vitro cellular assays, various cell lines including cancer cells and normal cells are treated with stearamide at concentrations ranging from 1 to 100 µM for 24-72 hours. Cell viability is assessed using MTT or CellTiter-Glo assays. Protein synthesis is measured using [³⁵S]-methionine incorporation or fluorescent puromycin-based assays. PI3K/Akt/mTOR pathway activation is assessed by Western blotting for phosphorylated AKT (Ser473), mTOR (Ser2448), S6K (Thr389), and 4E-BP1 (Thr37/46). Cell cycle distribution is analyzed by propidium iodide staining and flow cytometry. Apoptosis is quantified by Annexin V/PI staining and caspase activity assays. All experiments include appropriate controls (vehicle, known pathway modulators) and are performed in triplicate.
Animal Protocol
For in vivo ichthytoxicity studies, fish species such as zebrafish or rainbow trout are used. Stearamide is added to the water at varying concentrations (typically 0.1 to 100 mg/L), and fish mortality is monitored over 24-96 hours. The LC50 value is calculated from dose-response curves. For other in vivo studies, stearamide may be administered to rodents via oral gavage or intraperitoneal injection at doses ranging from 10 to 100 mg/kg. However, specific in vivo protocols for stearamide are not well-documented in publicly available sources. The compound's effects on protein synthesis and metabolic pathways may be assessed in tissue samples. All animal procedures should be conducted in accordance with institutional guidelines.
ADME/Pharmacokinetics
The pharmacokinetic properties of stearamide have not been extensively characterized, as it is primarily used as an industrial chemical and research reagent rather than a therapeutic agent. The compound has a molecular weight of 283.49 and is a lipophilic amide. Following oral or dermal exposure, it is expected to have moderate absorption and extensive tissue distribution due to its lipophilic nature. Metabolism is primarily hepatic, with oxidation and conjugation as major pathways. The compound is eliminated primarily via biliary and renal excretion. Due to its toxicity profile, systemic exposure is not typically targeted in research applications. Detailed PK data for stearamide are not available in publicly accessible literature.
Toxicity/Toxicokinetics
Toxicity Summary
Identification and Uses: Stearamide (stearamide) is a solid. It is used as a corrosion inhibitor in oil wells. It is also used in food packaging, plastics, and rubber products. Human Studies: No data are available. Animal Studies: Rats (n=5 males and 5 females per group) were administered stearamide dissolved in corn oil by gavage at a dose of 10,000 mg/kg and observed for 14 days. No deaths were observed. Salmonella Typhimurium strains TA98, TA100, TA1535, TA1537, and TA1538 were exposed to stearamide at concentrations of 50, 150, 500, 1500, or 5000 μg/plate with or without metabolic activation. Stearamide did not show mutagenicity in this study. Non-human Toxicity Values Oral LD50 in Rats: > 10,000 mg/kg
The toxicology of stearamide has been partially characterized. The compound displays cytotoxic activity in various cell types, indicating potential cellular toxicity. It also exhibits ichthytoxic activity, indicating toxicity to fish. In acute toxicity studies, the compound may cause irritation to skin and eyes. Inhalation of dust may cause respiratory irritation. Chronic exposure effects have not been well-studied. The compound is not genotoxic in standard in vitro assays. Stearamide should be handled with appropriate laboratory safety precautions, including the use of personal protective equipment. The compound is for research use only and is not approved for human use.
References

[1]. Identification of toxic fatty acid amides isolated from the harmful alga Prymnesium parvum carter.

Additional Infomation
Octadecanamide is a fatty amide of stearic acid, a metabolite whose function is related to that of octadecanoic acid. It has been reported to be found in bovine bacteria, Beauveria bassiana, and other organisms with relevant data.
Stearamide is a primary fatty acid amide with cytotoxic and ichthytoxic activity. It is used as a lubricating agent in the polymer industry and as a corrosion inhibitor. Cellular studies indicate it can stimulate protein synthesis via the PI3K/Akt/mTOR pathway. The compound is not approved for human use and is intended for research purposes only. It is available as a high-purity research reagent (≥97%) for laboratory use. Its biological activities and industrial applications make it a compound of interest for studying fatty acid amide biology and cellular signaling.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C18H37NO
Molecular Weight
283.492
Exact Mass
283.288
CAS #
124-26-5
PubChem CID
31292
Appearance
White to off-white solid powder
Density
0.868 g/cm3
Boiling Point
250-251 °C12 mm Hg(lit.)
Melting Point
98-102 °C(lit.)
Flash Point
207.5ºC
Vapour Pressure
7.11E-07mmHg at 25°C
Index of Refraction
1.432-1.434
LogP
6.433
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
1
Rotatable Bond Count
16
Heavy Atom Count
20
Complexity
204
Defined Atom Stereocenter Count
0
InChi Key
LYRFLYHAGKPMFH-UHFFFAOYSA-N
InChi Code
InChI=1S/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20)
Chemical Name
octadecanamide
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 3.5275 mL 17.6373 mL 35.2746 mL
5 mM 0.7055 mL 3.5275 mL 7.0549 mL
10 mM 0.3527 mL 1.7637 mL 3.5275 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:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
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.
/

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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