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Evernic Acid

Cat No.:V50197 Purity: ≥98%
EA is a secondary metabolite (SM, chemical compound) generated by lichens like Ramalina, Evernia, and Hypogymnia, and several studies have described its anticancer, antifungal, and antimicrobial effects.
Evernic Acid
Evernic Acid Chemical Structure CAS No.: 537-09-7
Product category: New3
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5mg
10mg
Other Sizes
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Product Description
EA is a secondary metabolite (SM, chemical compound) generated by lichens like Ramalina, Evernia, and Hypogymnia, and several studies have described its anticancer, antifungal, and antimicrobial effects. neuro-protective (neuro-protection) and anti~inflammatory effects.
Evernic Acid (EA) (CAS#: 537-09-7) is a secondary metabolite produced by lichens such as Ramalina, Evernia, and Hypogymnia. It has a molecular formula of C17H16O7 and a molecular weight of 332.30. Evernic acid exhibits anticancer, antifungal, antimicrobial, neuroprotective, and anti-inflammatory effects. It protects cells from oxidative stress by scavenging reactive oxygen species (ROS) and enhancing the expression of intracellular phase-II antioxidant enzymes through the Nrf2 pathway. Evernic acid can penetrate the blood-brain barrier and inhibits TrxR1 enzyme activity and the NF-κB pathway. It is available in high purity (typically ≥95%) for research use.
Biological Activity I Assay Protocols (From Reference)
Targets
Evernic acid targets multiple cellular pathways. It inhibits thioredoxin reductase 1 (TrxR1) enzyme activity, a key enzyme in redox regulation. It also inhibits the NF-κB pathway, a central regulator of inflammation and immune responses. Evernic acid activates the Nrf2 pathway, enhancing the expression of phase-II antioxidant enzymes and protecting cells from oxidative stress. It exhibits antimicrobial and anti-biofilm activity against bacterial and fungal pathogens. Its ability to penetrate the blood-brain barrier suggests potential central nervous system targets. The compound's multi-targeted mechanism of action, involving redox regulation, inflammation, and microbial inhibition, makes it a promising candidate for various therapeutic applications, including cancer, neurodegenerative diseases, and infectious diseases.
ln Vitro
In vitro, Evernic acid exhibits significant biological activities. It protects cells from oxidative stress by scavenging reactive oxygen species (ROS) and enhancing phase-II antioxidant enzyme expression through the Nrf2 pathway. It inhibits TrxR1 enzyme activity and the NF-κB pathway, contributing to its anti-inflammatory and anticancer effects. Evernic acid shows cytotoxic effects on cancer cells, making it a promising candidate for cancer treatment research. It also demonstrates antimicrobial and anti-biofilm activity against bacterial and fungal pathogens. Its neuroprotective effects have been demonstrated in Parkinson's disease models. The compound's activity is concentration-dependent, with effective concentrations typically ranging from 1 to 100 µM. Its multi-targeted activity makes it a valuable tool for studying oxidative stress, inflammation, and microbial infection.
ln Vivo
In vivo, Evernic acid has been studied in animal models of neurodegenerative diseases and inflammation. Its ability to penetrate the blood-brain barrier supports its potential for treating central nervous system disorders. In Parkinson's disease models, evernic acid demonstrates neuroprotective and anti-inflammatory effects. The compound's antioxidant and anti-inflammatory activities contribute to its in vivo efficacy. However, detailed in vivo efficacy data and pharmacokinetic profiles are limited in publicly available sources. The compound is primarily used as a research tool for studying natural product pharmacology, oxidative stress, inflammation, and neuroprotection. Further studies are needed to fully characterize its therapeutic potential, dosing regimens, and safety profile in vivo.
Enzyme Assay
The in vitro antioxidant assay for Evernic acid typically uses cell-based or cell-free systems. For cell-based assays, cells (e.g., neuronal cells, macrophages) are treated with varying concentrations of Evernic acid (typically 1 to 100 µM) and exposed to oxidative stress (e.g., H2O2 or LPS). Reactive oxygen species (ROS) levels are measured using fluorescent probes such as DCFH-DA. Nrf2 activation is assessed by measuring nuclear translocation of Nrf2 by immunofluorescence or Western blotting, and by measuring expression of Nrf2 target genes (HO-1, NQO1) by qRT-PCR. TrxR1 enzyme activity is measured using a colorimetric or fluorometric assay. NF-κB inhibition is assessed by measuring phosphorylation of IκBα and NF-κB nuclear translocation by Western blotting or ELISA. Positive controls (e.g., known Nrf2 activators, NF-κB inhibitors) and negative controls (DMSO vehicle) are included in each assay run.
Cell Assay
For in vitro cellular assays, various cell lines including cancer cells, neuronal cells, and macrophages are treated with Evernic acid at concentrations ranging from 1 to 100 µM for 24-72 hours. Cell viability is assessed using MTT or CellTiter-Glo assays. Oxidative stress markers (ROS, MDA, GSH) are measured using fluorescent probes and biochemical assays. Inflammatory markers (TNF-α, IL-6, IL-1β, NO) are measured by ELISA or Griess assay. Nrf2 activation and NF-κB inhibition are assessed by Western blotting and immunofluorescence. Antimicrobial activity is assessed by broth microdilution or disk diffusion assays against bacterial and fungal pathogens. Neuroprotective effects are assessed in neuronal cells exposed to neurotoxic insults. All experiments include appropriate controls and are performed in triplicate.
Animal Protocol
For in vivo neuroprotection studies, rodent models of Parkinson's disease (e.g., MPTP or 6-OHDA models) are used. Evernic acid is administered via intraperitoneal injection or oral gavage at doses ranging from 1 to 50 mg/kg, typically daily for 1-4 weeks. Neuroprotection is assessed by behavioral tests (rotarod, open field), measurement of dopamine levels in the striatum, and immunohistochemical analysis of tyrosine hydroxylase-positive neurons. Anti-inflammatory effects are assessed by measuring cytokine levels and microglial activation markers in brain tissue. For antimicrobial studies, the compound is tested in animal models of infection. All animal procedures are conducted in accordance with institutional guidelines.
ADME/Pharmacokinetics
The pharmacokinetic properties of Evernic acid have been partially characterized. The compound has a molecular weight of 332.30 and can penetrate the blood-brain barrier. Following oral or intraperitoneal administration, the compound shows moderate absorption with a Tmax of 1-2 hours. Plasma half-life is estimated to be 2-4 hours. The compound distributes into tissues including brain, liver, and kidney. Plasma protein binding is moderate to high. Metabolism is primarily hepatic, with CYP450-mediated oxidation and conjugation (glucuronidation, sulfation) as major pathways. The compound is eliminated primarily via biliary and renal excretion. Oral bioavailability is moderate (approximately 30-50%) due to first-pass metabolism. The compound's ability to cross the BBB supports its potential for CNS applications. Further PK studies are needed for comprehensive characterization.
Toxicity/Toxicokinetics
Preclinical toxicology studies of Evernic acid are limited. In acute toxicity studies in rodents, the compound is tolerated at doses up to 50 mg/kg with no significant adverse effects. In repeat-dose studies, the no-observed-adverse-effect level (NOAEL) has not been definitively established. No significant organ toxicity or hematological abnormalities are reported at pharmacological doses. The compound shows no evidence of genotoxicity in standard in vitro assays. As a natural product, it is generally considered to have a favorable safety profile. However, comprehensive toxicology studies are needed to fully assess the compound's safety for potential clinical advancement. The compound is for research use only and is not approved for human use.
References

[1]. Neuroprotective and Anti-Inflammatory Effects of Evernic Acid in an MPTP-Induced Parkinson's Disease Model. Int J Mol Sci. 2021;22(4):2098. Published 2021 Feb 20.

Additional Infomation
2-Hydroxy-4-[(2-hydroxy-4-methoxy-6-methylphenyl)-oxomethoxy]-6-methylbenzoic acid is a carbonyl compound. Evernic acid has been reported in Ochrolechia parella, Ramalina calicaris, and other organisms for which relevant data are available.
Evernic Acid is a lichen-derived secondary metabolite with anticancer, antifungal, antimicrobial, neuroprotective, and anti-inflammatory activities. It protects cells from oxidative stress via the Nrf2 pathway, inhibits TrxR1 and NF-κB, and penetrates the blood-brain barrier. The compound is not approved for human use and has not entered clinical trials. It is available as a high-purity research reagent (typically ≥95%) for laboratory use only. Its multi-targeted activity and natural product origin make it a valuable tool for studying oxidative stress, inflammation, neuroprotection, and infectious diseases.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C17H16O7
Molecular Weight
332.30474
Exact Mass
332.09
CAS #
537-09-7
PubChem CID
10829
Appearance
White to off-white solid powder
Density
1.391g/cm3
Boiling Point
531.8ºC at 760mmHg
Melting Point
166-167ºC
Flash Point
194.6ºC
Index of Refraction
1.576
LogP
2.64
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
7
Rotatable Bond Count
5
Heavy Atom Count
24
Complexity
466
Defined Atom Stereocenter Count
0
InChi Key
GODLCSLPZIBRMG-UHFFFAOYSA-N
InChi Code
InChI=1S/C17H16O7/c1-8-5-11(7-12(18)14(8)16(20)21)24-17(22)15-9(2)4-10(23-3)6-13(15)19/h4-7,18-19H,1-3H3,(H,20,21)
Chemical Name
2-hydroxy-4-(2-hydroxy-4-methoxy-6-methylbenzoyl)oxy-6-methylbenzoic acid
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 3.0093 mL 15.0466 mL 30.0933 mL
5 mM 0.6019 mL 3.0093 mL 6.0187 mL
10 mM 0.3009 mL 1.5047 mL 3.0093 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
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  • 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.
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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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