Name: Tetrandrine
Brand: Selleck Chemicals
SKU: S2403
Availability: InStock
Rating: 5 (18 reviews)

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Quality Control

Batch: Purity: 99.95%

99.95

Related Targets	CFTR CRM1 CD markers AChR Sodium Channel Potassium Channel GABA Receptor TRP Channel ATPase GluR
Other Calcium Channel Inhibitors	Bay K 8644 BAPTA-AM Flunarizine 2HCl Nilvadipine Cilnidipine YM-58483 (BTP2) Ionomycin Imperatorin Manidipine 2HCl Astragaloside A

Solubility

In vitro
Batch:

DMSO : 12 mg/mL (19.26 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 3 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.600mg/ml (0.96mM)	Taking the 1 mL working solution as an example, add 50 μL of 12 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.600mg/ml (0.96mM)	Taking the 1 mL working solution as an example, add 50 μL of 12 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

%

% Tween 80

% ddH₂O

% DMSO

+

%

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	622.75	Formula	C₃₈H₄₂N₂O6	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	518-34-3	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent

Read more about storage stability stock solution CAS number

Mechanism of Action

Targets/IC₅₀/Ki	Calcium channel
In vitro	Tetrandrine inhibits voltage-gated Ca2+ currents with an IC50 of 10.1 mM in isolated nerve terminals of the rat neurohypophysis. This compound is a high-affinity blocker of the type II, maxi-Ca(2+)-activated K+ channel of the rat neurohypophysial terminals with an IC50 of 0.21 mM. Another study shows that it also inhibits Ca(2+)-activated Cl- currents (I(Cl,Ca)) with an IC50 of 5.2 mM. This chemical inhibits the proliferation of human leukemic HL-60 cells via induction of apoptosis.
References	[1] https://pubmed.ncbi.nlm.nih.gov/1331975/ [2] https://pubmed.ncbi.nlm.nih.gov/15000886/ [3] https://pubmed.ncbi.nlm.nih.gov/9042394/

Applications

Methods	Biomarkers	PMID
Western blot	p-GSK3β / GSK3β / p-β-catenin / β-catenin Atg7 p-ASK1 / ASK1 / p-SEK1 / SEK1 / p-JNK1/2 / JNK1/2	29334999
Growth inhibition assay	Cell viability	29285984
Immunofluorescence	E-cadherin / Vimentin p-STAT3	29334999

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-01-06)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07319598	RECRUITING	Interstitial Lung Disease (ILD); Connective Tissue Disease-associated Interstitial Lung Disease	Peking University Third Hospital	2023-11-02	PHASE4
NCT05697029	WITHDRAWN	COVID-19	Peking University Third Hospital	2023-12-31	PHASE4
NCT05245448	UNKNOWN	Rheumatoid Arthritis	Peking University People's Hospital	2022-02-22
NCT04308317	UNKNOWN	Corona Virus Disease 2019,COVID-19	Henan Provincial People's Hospital	2020-03-05	PHASE4

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Handling Instructions

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Tetrandrine Calcium Channel inhibitor

Chemical Structure

Molecular Weight: 622.75