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Arachidonoyl Serinol

Cat No.:V73519 Purity: ≥98%
Arachidonoyl Serinol, an endogenously produced metabolite of cannabinoids, is an inhibitor (blocker/antagonist) of monoacylglycerol lipase (MAGL).
Arachidonoyl Serinol
Arachidonoyl Serinol Chemical Structure CAS No.: 183718-70-9
Product category: MAGL
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
Arachidonoyl Serinol, an endogenously produced metabolite of cannabinoids, is an inhibitor (blocker/antagonist) of monoacylglycerol lipase (MAGL). Arachidonoyl Serinol inhibits the hydrolysis of [3H]2-oleoylglycerol and [3H]anandamide with IC50 of approximately 70 μM.
Arachidonoyl Serinol (CAS#: 183718-70-9) is an amide-containing analog of the endocannabinoid 2-arachidonoylglycerol (2-AG). It has been investigated as an inhibitor of monoacylglycerol lipase (MAGL), the primary enzyme responsible for 2-AG degradation. This compound serves as a research tool for probing the endocannabinoid system, though with relatively low potency.
Biological Activity I Assay Protocols (From Reference)
Targets
monoacylglycerol lipase (MAGL)[1]
Arachidonoyl Serinol targets monoacylglycerol lipase (MAGL), the primary enzyme responsible for the hydrolysis of the endocannabinoid 2-arachidonoylglycerol (2-AG). It acts as an inhibitor of MAGL. Additionally, this compound exhibits weak agonistic activity at the CB1 cannabinoid receptor, meaning it can also directly activate one of the primary receptors for endocannabinoids.
ln Vitro
With IC50s of approximately 70 μM, arachidonoyl serinol (0.2-100 μM) inhibits the hydrolysis of [3H]2-oleoylglycerol and [3H]anandamide[2].
In vitro, Arachidonoyl Serinol inhibits the activity of monoacylglycerol lipase (MAGL). Specifically, it inhibits the hydrolysis of [3H]2-oleoylglycerol (a surrogate substrate for 2-AG) and [3H]anandamide with IC50 values of approximately 70 microM. This indicates it is a relatively low-potency inhibitor. It also induces a weak elevation of intracellular calcium ([Ca2+]i) in NG108-15 cells, likely due to its weak CB1 receptor agonistic activity.
ln Vivo
In vivo activity data for Arachidonoyl Serinol is not detailed in the provided sources. As a low-potency MAGL inhibitor and weak CB1 agonist, its effects in vivo would be complex and likely require relatively high doses to observe any pharmacology. It could be used to study the endocannabinoid system, but its limited potency suggests it is not an ideal selective tool for in vivo studies.
Enzyme Assay
To evaluate its MAGL inhibitory activity, a standard cell-free enzyme assay is used. Recombinant human MAGL is incubated with varying concentrations of Arachidonoyl Serinol (e.g., 0.1-1000 uM). The reaction is initiated by adding a radiolabeled substrate, such as [3H]2-oleoylglycerol. After a set incubation, the reaction is stopped, and the release of the radioactive product (oleic acid) is quantified by liquid scintillation counting. The IC50 (approximately 70 uM) is calculated.
Cell Assay
Cannabinoid receptor activity can be assessed in a cell-based calcium flux assay. NG108-15 neuroblastoma × glioma hybrid cells, which endogenously express CB1 receptors, are loaded with a calcium-sensitive dye (e.g., Fluo-4). The cells are then treated with varying concentrations of Arachidonoyl Serinol. A weak elevation of intracellular calcium ([Ca2+]i) is measured as a proxy for CB1 receptor activation. This activity is compared to a known CB1 agonist to determine its efficacy.
Animal Protocol
For an in vivo study, Arachidonoyl Serinol would be formulated in a vehicle like 1:1:18 (ethanol, Tween-80, saline) and administered via intraperitoneal injection to mice at doses ranging from 10-100 mg/kg. Standard behavioral assays for CB1 activation, such as the tetrad assay (measuring hypothermia, catalepsy, hypolocomotion, and analgesia), could be used to assess its in vivo CB1 agonistic activity. However, due to its low potency, high doses would be required, increasing the risk of off-target effects.
ADME/Pharmacokinetics
Detailed pharmacokinetic data for Arachidonoyl Serinol is not publicly available. The compound has a molecular weight of 377.56 g/mol. Its structure suggests it is a lipophilic molecule with properties similar to other endocannabinoid analogs. Researchers would need to conduct formal PK studies to determine its half-life, bioavailability, and brain penetration.
Toxicity/Toxicokinetics
Published toxicology data for Arachidonoyl Serinol is limited. In cell-based assays at concentrations used to study MAGL inhibition (e.g., 70 uM), it does not cause overt cytotoxicity. However, as with all research chemicals, appropriate safety measures should be used.
References

[1]. Head group analogs of arachidonylethanolamide, the endogenous cannabinoid ligand. J Med Chem. 1996 Oct 25;39(22):4515-9.

[2]. Cyclooxygenation of the arachidonoyl side chain of 1-arachidonoylglycerol and related compounds block their ability to prevent anandamide and 2-oleoylglycerol metabolism by rat brain in vitro. Biochem Pharmacol. 2005 Apr 15;69(8):1241-5.

[3]. Inhibition of monoacylglycerol lipase and fatty acid amide hydrolase by analogues of 2-arachidonoylglycerol. Br J Pharmacol. 2004 Nov;143(6):774-84.

Additional Infomation
N-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-(1,3-dihydroxypropyl-2-amine) is a fatty amide.
This compound is a research-grade chemical and is not approved for clinical use. It is used as a pharmacological tool to study the endocannabinoid system, though its utility is limited by its relatively low potency as a MAGL inhibitor and its off-target activity at the CB1 receptor. The compound should be stored at -20degC, protected from light and moisture. For research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C23H39NO3
Molecular Weight
377.56
Exact Mass
377.292
CAS #
183718-70-9
PubChem CID
10595770
Appearance
Off-white to light yellow solid powder
Density
1.0±0.1 g/cm3
Boiling Point
498.2±45.0 °C at 760 mmHg
Flash Point
255.1±28.7 °C
Vapour Pressure
0.0±2.9 mmHg at 25°C
Index of Refraction
1.508
LogP
6.6
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
3
Rotatable Bond Count
17
Heavy Atom Count
27
Complexity
449
Defined Atom Stereocenter Count
0
SMILES
CCCCC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)NC(CO)CO
InChi Key
QHELXIATGZYOIB-DOFZRALJSA-N
InChi Code
InChI=1S/C23H39NO3/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-23(27)24-22(20-25)21-26/h6-7,9-10,12-13,15-16,22,25-26H,2-5,8,11,14,17-21H2,1H3,(H,24,27)/b7-6-,10-9-,13-12-,16-15-
Chemical Name
(5Z,8Z,11Z,14Z)-N-(1,3-dihydroxypropan-2-yl)icosa-5,8,11,14-tetraenamide
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)
DMSO: 100 mg/mL (264.86 mM)
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 2.6486 mL 13.2429 mL 26.4859 mL
5 mM 0.5297 mL 2.6486 mL 5.2972 mL
10 mM 0.2649 mL 1.3243 mL 2.6486 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

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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?
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  • 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:
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  • 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:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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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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