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Isobutylshikonin

Cat No.:V34248 Purity: ≥98%
Isobutylshikonin is a shikonin pigment developed from Lithospermum canescens hairy root cultures.
Isobutylshikonin
Isobutylshikonin Chemical Structure CAS No.: 52438-12-7
Product category: Natural Products
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
100mg
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Product Description
Isobutylshikonin is a shikonin pigment developed from Lithospermum canescens hairy root cultures.
Isobutylshikonin (CAS# 52438-12-7), also known as isobutyrylshikonin, is a naturally occurring isohexenylnaphthazarin pigment belonging to the shikonin family of 1,4-naphthoquinones. It is isolated from Lithospermum erythrorhizon. The compound exhibits obvious antioxidant activities, with very good radical scavenging activities toward ABTS⁺ but moderate inhibition of DPPH·. It also possesses anti-inflammatory, anticancer, and antimicrobial effects.
Biological Activity I Assay Protocols (From Reference)
Targets
Isobutylshikonin targets multiple pathways. It exhibits antioxidant activity through radical scavenging mechanisms. The compound inhibits tumor growth by inducing apoptosis and inhibiting angiogenesis. Its anti-inflammatory activity involves modulation of inflammatory signaling pathways. The compound also demonstrates antimicrobial effects.
ln Vitro
In vitro, isobutylshikonin exhibits obvious antioxidant activities, with very good radical scavenging activities toward ABTS⁺ and moderate inhibition of DPPH·. It inhibits tumor growth by inducing apoptosis and inhibiting angiogenesis. The compound also demonstrates anti-inflammatory and antimicrobial effects. Its activities have been compared and evaluated through Rancimat method, reducing power, and radical scavenging activity assays.
ln Vivo
In vivo studies on isobutylshikonin are limited. Based on its mechanism of action, the compound may have potential in cancer treatment and inflammatory disorders. Its anti-inflammatory activity supports potential use in skin care formulations and wound healing. Further in vivo studies are needed to fully characterize its pharmacological effects and therapeutic potential.
Enzyme Assay
For in vitro antioxidant assays, isobutylshikonin is evaluated using ABTS⁺ and DPPH· radical scavenging assays. In the ABTS assay, the compound is incubated with ABTS⁺ radical solution, and the decrease in absorbance at 734 nm is measured. In the DPPH assay, the compound is incubated with DPPH radical solution, and the decrease in absorbance at 517 nm is measured. Scavenging activity is calculated as a percentage.
Cell Assay
For in vitro cell-based assays, isobutylshikonin is typically tested on cancer cell lines. Cells are treated with the compound at various concentrations (typically 1-100 μM) for 24-72 hours. Cell viability and proliferation are assessed using MTT or CCK-8 assays. Apoptosis is evaluated by flow cytometry with Annexin V/PI staining. Angiogenesis inhibition can be assessed using endothelial cell tube formation assays.
Animal Protocol
In vivo animal experiments for isobutylshikonin have not been extensively reported. Based on its mechanism as an anticancer and anti-inflammatory agent, potential experimental models include xenograft tumor models in mice and inflammation models. The compound could be administered orally or intraperitoneally, with tumor volume, inflammatory markers, and histopathological examination used as pharmacodynamic endpoints.
ADME/Pharmacokinetics
Pharmacokinetic data for isobutylshikonin are limited. As a naphthoquinone with a molecular weight of 358.39 g/mol and formula C₂₀H₂₂O₆, it is expected to have moderate oral bioavailability. Standard pharmacokinetic studies would be required to determine its absorption, distribution, metabolism, and excretion profile.
Toxicity/Toxicokinetics
Toxicological data for isobutylshikonin are limited. As a shikonin family naphthoquinone, it may have cytotoxic effects at high concentrations. However, comprehensive toxicological studies have not been extensively reported. The compound is classified as a research-grade reagent and is not for human use.
References

[1]. Shikonin pigments from hairy root culture of Lithospermum canescens. Planta Med 2007; 73 - P_185.

Additional Infomation
Isobutylshikonin is a hydroxy-1,4-naphthoquinone. It has been reported that isobutylshikonin is present in Lithospermum erythrorhizon, and relevant data is available for reference.
Isobutylshikonin is a research-use only compound and has not been approved for clinical applications. It is also known as isobutyrylshikonin and异丁酰紫草素 in Chinese. The compound is isolated from Lithospermum erythrorhizon. Its molecular weight is 358.39 and formula is C₂₀H₂₂O₆. It is available from various research chemical suppliers.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C20H22O6
Molecular Weight
358.38500
Exact Mass
358.141
CAS #
52438-12-7
PubChem CID
479500
Appearance
Brown to black Solid
Density
1.3±0.1 g/cm3
Boiling Point
565.2±45.0 °C at 760 mmHg
Melting Point
88ºC
Flash Point
295.6±28.7 °C
Vapour Pressure
0.0±1.6 mmHg at 25°C
Index of Refraction
1.577
LogP
4.27
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
6
Rotatable Bond Count
6
Heavy Atom Count
26
Complexity
641
Defined Atom Stereocenter Count
1
SMILES
CC(=CC[C@H](C1=CC(=O)C2=C(C=CC(=C2C1=O)O)O)OC(=O)C(C)C)C
InChi Key
BVRYLTBIGIAADD-MRXNPFEDSA-N
InChi Code
InChI=1S/C20H22O6/c1-10(2)5-8-16(26-20(25)11(3)4)12-9-15(23)17-13(21)6-7-14(22)18(17)19(12)24/h5-7,9,11,16,21-22H,8H2,1-4H3/t16-/m1/s1
Chemical Name
[(1R)-1-(5,8-dihydroxy-1,4-dioxonaphthalen-2-yl)-4-methylpent-3-enyl] 2-methylpropanoate
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

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
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 2.7903 mL 13.9513 mL 27.9026 mL
5 mM 0.5581 mL 2.7903 mL 5.5805 mL
10 mM 0.2790 mL 1.3951 mL 2.7903 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?
  • 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

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • 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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