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Ac-YVAD-AOM

Cat No.:V54966 Purity: ≥98%
Ac-YVAD-AOM is an inhibitor (blocker/antagonist) of caspase-1 and has anti-tumor activity.
Ac-YVAD-AOM
Ac-YVAD-AOM Chemical Structure CAS No.: 154674-81-4
Product category: Apoptosis
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
10mg
Other Sizes
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Product Description
Ac-YVAD-AOM is an inhibitor (blocker/antagonist) of caspase-1 and has anti-tumor activity.
Ac-YVAD-AOM (CAS 154674-81-4) is a peptide-based caspase inhibitor. It is a tetrapeptide sequence (Acetyl-Tyr-Val-Ala-Asp) coupled to a 7-amino-4-methylcoumarin (AOM) fluorophore. The compound is a specific inhibitor of caspase-1 (interleukin-1β converting enzyme, ICE) and related caspases. Ac-YVAD-AOM is used as a research tool to study caspase activity and apoptosis. The fluorophore allows for the detection and quantification of caspase activity in cell-free and cell-based assays.
Biological Activity I Assay Protocols (From Reference)
Targets
Ac-YVAD-AOM targets caspase-1 (interleukin-1β converting enzyme, ICE) and related caspases. Caspases are a family of cysteine proteases that play essential roles in apoptosis and inflammation. Caspase-1 is involved in the processing of pro-inflammatory cytokines such as IL-1β and IL-18. By inhibiting caspase-1, Ac-YVAD-AOM modulates inflammatory responses and apoptosis.
ln Vitro
In cell-free biochemical systems, Ac-YVAD-AOM inhibits caspase-1 activity. The compound's inhibition of caspase-1 can be assessed using fluorogenic substrates that are cleaved by caspase-1, releasing a fluorescent signal. The IC50 is determined from dose-response curves. The compound's selectivity for different caspases can be assessed by testing against a panel of purified caspase enzymes.
ln Vivo
In cell-based assays, Ac-YVAD-AOM inhibits caspase-1 activity, leading to reduced processing of pro-inflammatory cytokines and modulation of apoptosis. The compound's effects are evaluated in immune cells by measuring IL-1β and IL-18 processing. The compound can be used to study the role of caspase-1 in inflammation and cell death.
Enzyme Assay
The cell-free assay for caspase-1 inhibition involves measuring the enzymatic activity of purified caspase-1 in the presence of the compound. The assay uses a fluorogenic substrate (e.g., Ac-YVAD-AMC) that is cleaved by caspase-1, releasing a fluorescent signal. The compound is incubated with the enzyme and substrate, and the fluorescence is measured over time. The IC50 is determined from dose-response curves.
Cell Assay
Cell-based assays for Ac-YVAD-AOM involve culturing immune cells such as macrophages and treating them with the compound at concentrations ranging from 0.01 to 100 μM. Cells are stimulated with LPS or other inflammasome activators to induce caspase-1 activation. Caspase-1 activity is assessed by measuring the processing of pro-IL-1β to mature IL-1β by Western blotting or ELISA. Apoptosis is assessed by measuring caspase-3 activity or by Annexin V staining.
Animal Protocol
In animal models, Ac-YVAD-AOM has been evaluated for its ability to inhibit caspase-1 and modulate inflammatory responses. Typical studies involve administration of the compound to mice via intraperitoneal or intravenous routes. Inflammatory disease models are used to assess the compound's ability to reduce inflammation. Tissues are collected for analysis of caspase-1 activity, cytokine levels, and inflammatory markers.
ADME/Pharmacokinetics
Pharmacokinetic properties of Ac-YVAD-AOM have not been extensively reported. As a peptide-based compound with a molecular weight of approximately 612.6 g/mol, the compound would be expected to have limited oral bioavailability and may require parenteral administration. The compound is typically metabolized by peptidases and other enzymes. Further pharmacokinetic studies would be required for therapeutic development.
Toxicity/Toxicokinetics
Ac-YVAD-AOM is intended for research use only and lacks established toxicity profiles for therapeutic applications. Standard laboratory safety precautions should be observed when handling this chemical reagent. As a caspase-1 inhibitor, the compound may have effects on immune function and inflammatory responses. Standard toxicity studies would be required for therapeutic development.
References

[1]. Inhibition of caspase-1 induces cell death in pancreatic carcinoma cells and potentially modulates expression levels of bcl-2 family proteins. FEBS Lett. 2001 Feb 23;491(1-2):104-8.

Additional Infomation
Ac-YVAD-AOM is a research-grade compound supplied for caspase and apoptosis research. It is not an approved pharmaceutical and has no clinical trial history. The compound is a peptide-based caspase-1 inhibitor with a fluorophore for detection. This product is intended for research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C33H42N4O10
Molecular Weight
654.71
Exact Mass
654.29
CAS #
154674-81-4
PubChem CID
9852588
Appearance
Typically exists as solid at room temperature
Density
1.3±0.1 g/cm3
Boiling Point
1029.6±65.0 °C at 760 mmHg
Flash Point
576.5±34.3 °C
Vapour Pressure
0.0±0.3 mmHg at 25°C
Index of Refraction
1.566
LogP
4.77
Hydrogen Bond Donor Count
6
Hydrogen Bond Acceptor Count
10
Rotatable Bond Count
17
Heavy Atom Count
47
Complexity
1130
Defined Atom Stereocenter Count
4
SMILES
CC([C@H](NC([C@@H](NC(C)=O)CC1=CC=C(O)C=C1)=O)C(N[C@H](C(N[C@H](C(COC(C2=C(C=CC=C2C)C)=O)=O)CC(O)=O)=O)C)=O)C
InChi Key
LOACDHZQOPEFKK-NFJAKAEBSA-N
InChi Code
InChI=1S/C33H42N4O10/c1-17(2)29(37-31(44)25(35-21(6)38)14-22-10-12-23(39)13-11-22)32(45)34-20(5)30(43)36-24(15-27(41)42)26(40)16-47-33(46)28-18(3)8-7-9-19(28)4/h7-13,17,20,24-25,29,39H,14-16H2,1-6H3,(H,34,45)(H,35,38)(H,36,43)(H,37,44)(H,41,42)/t20-,24-,25-,29-/m0/s1
Chemical Name
(3S)-3-[[(2S)-2-[[(2S)-2-[[(2S)-2-acetamido-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylbutanoyl]amino]propanoyl]amino]-5-(2,6-dimethylbenzoyl)oxy-4-oxopentanoic 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 1.5274 mL 7.6370 mL 15.2739 mL
5 mM 0.3055 mL 1.5274 mL 3.0548 mL
10 mM 0.1527 mL 0.7637 mL 1.5274 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.
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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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