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Chlorahololide D

Chlorahololide D is a potent and specific Potassium Channel blocker with IC50 of 2.7 μM.
Chlorahololide D
Chlorahololide D Chemical Structure CAS No.: 943136-39-8
Product category: Potassium Channel
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
Other Sizes
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Product Description
Chlorahololide D is a potent and specific Potassium Channel blocker with IC50 of 2.7 μM. Chlorahololide D is a naturally occurring compound extracted from the whole plant of Chloranthus holostegius.
Product Application
Overview
Chlorahololide D is a naturally occurring compound extracted from the whole plant of Chloranthus holostegius and supplied by InvivoChem for research use. This plant-derived molecule belongs to a group of bioactive natural products studied for their ion channel-related activity and structural complexity. As a defined small molecule isolated from a botanical source, Chlorahololide D is particularly relevant in research focused on selective potassium channel modulation and natural product-based pharmacology.
Its research-grade quality and consistent composition support controlled laboratory studies requiring reproducible material for mechanistic and comparative investigations. Chlorahololide D has also been reported in related Chloranthus species, further supporting its relevance in phytochemical and bioactivity-driven research.
For researchers studying channel-active natural compounds, Chlorahololide D offers a well-characterized option for pathway-focused experimental work.

Mechanism of Action
Chlorahololide D is described as a potent and specific potassium channel blocker with an IC50 of 2.7 μM. This activity makes it a useful tool for examining potassium channel function and for investigating how selective channel blockade influences cellular signaling and electrophysiological behavior.
Since potassium channels play an important role in membrane potential regulation and downstream cellular responses, compounds such as Chlorahololide D can support targeted studies of ion transport and channel-associated biological effects. Its reported potency and specificity make it particularly valuable in experimental systems where selective channel inhibition is required.
Rather than functioning as a broad ion channel modulator, Chlorahololide D is best suited for focused investigation of potassium channel-dependent mechanisms.

Research Applications
Chlorahololide D is widely used in potassium channel research, ion transport studies, and natural product investigations involving selective channel-active compounds. It supports experimental work focused on channel inhibition, membrane signaling, and the characterization of bioactive metabolites from botanical sources.
Researchers may also use it in comparative studies of potassium channel blockers or in analytical workflows involving natural product identification.
InvivoChem supplies Chlorahololide D with supporting documentation, including COA, SDS, and usage instructions, to help ensure consistency in laboratory workflows. For research involving potassium channel blockade or plant-derived ion channel modulators, Chlorahololide D offers a dependable, research-ready solution. Reach out to InvivoChem for more information.
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Biological Activity I Assay Protocols (From Reference)
References

[1]. Chlorahololides C–F: a new class of potent and selective potassium channel blockers from Chloranthus holostegius. Tetrahedron. 2008 Feb 25;64(9): 2027-34.

Additional Infomation
It has been reported that Chlorahololide D has been found in Chloranthus henryi and Chloranthus spicatus, and relevant data are available for reference.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C38H44O11
Molecular Weight
676.75
Exact Mass
676.288
CAS #
943136-39-8
PubChem CID
44207635
Appearance
Typically exists as solid at room temperature
Density
1.4±0.1 g/cm3
Boiling Point
833.7±65.0 °C at 760 mmHg
Flash Point
259.4±27.8 °C
Vapour Pressure
0.0±0.6 mmHg at 25°C
Index of Refraction
1.630
Source
Originated from plants: Chloranthaceae Chloranthus holostegius (Hand.-Mazz.) Pei et Shan
LogP
3.08
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
11
Rotatable Bond Count
9
Heavy Atom Count
49
Complexity
1800
Defined Atom Stereocenter Count
12
SMILES
C(=C1/C(=O)[C@H](O)[C@]2([C@@H]3C[C@@H]3C3=C2[C@H]/1[C@]12OC(=O)C(COC(=O)C)=C1C[C@@H]1[C@@]([C@@H]4C[C@@H]4[C@@]1(O)COC(=O)/C(/C)=C/C)(C)[C@@H]2C3)C)(\C)/C(=O)OC
InChi Key
WZKZSZYDBUUHLB-IBBKUXAASA-N
InChi Code
InChI=1S/C38H44O11/c1-8-15(2)32(42)48-14-37(45)24-11-23(24)35(5)25(37)12-22-20(13-47-17(4)39)34(44)49-38(22)26(35)10-19-18-9-21(18)36(6)28(19)29(38)27(30(40)31(36)41)16(3)33(43)46-7/h8,18,21,23-26,29,31,41,45H,9-14H2,1-7H3/b15-8+,27-16-/t18-,21-,23-,24+,25-,26+,29+,31+,35+,36+,37+,38+/m1/s1
Chemical Name
[(1R,2S,8R,9S,10S,12R,13S,14S,17S,19R,20S,21R,23Z)-5-(acetyloxymethyl)-9,21-dihydroxy-23-(1-methoxy-1-oxopropan-2-ylidene)-13,20-dimethyl-4,22-dioxo-3-oxaoctacyclo[14.7.1.02,6.02,14.08,13.010,12.017,19.020,24]tetracosa-5,16(24)-dien-9-yl]methyl (E)-2-methylbut-2-enoate
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 : PEG300 :Tween 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 : PEG300:Tween 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 1.4777 mL 7.3883 mL 14.7765 mL
5 mM 0.2955 mL 1.4777 mL 2.9553 mL
10 mM 0.1478 mL 0.7388 mL 1.4777 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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