All Photos(1)



Thioridazine hydrochloride


10-[2-(1-Methyl-2-piperidyl)ethyl]-2-(methylthio)-10H-phenothiazine hydrochloride
Empirical Formula (Hill Notation):
C21H26N2S2 · HCl
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level




H2O: soluble 250 mg plus 5 ml of solvent, clear, colorless to faintly yellow
chloroform: soluble
diethyl ether: insoluble
ethanol: soluble
methanol: soluble

SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide


Thioridazine hydrochloride has been used as an intercalating agent for analyzing the integrity of double-stranded DNA (dsDNA) using square-wave voltammetry (SWV) techniques. Thioridazine hydrochloride has also been used as a positive control for the inhibition of hepatic enzyme cytochrome P4502D6 (CYP2D6) in human liver microsomes.

Biochem/physiol Actions

D2 dopamine receptor antagonist; phenothazine antipsychotic with reduced extrapyramidal side effects; Ca2+ channel blocker.

Preparation Note

250 mg of thioridazine hydrochloride is soluble in 5 ml of water and yields a clear, colorless to faint yellow solution. Thioridazine hydrochloride is also soluble in methanol, ethanol, and chloroform, but it is insoluble in ether.


Exclamation mark

Signal Word


Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids



Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

H K Crewe et al.
British journal of clinical pharmacology, 34(3), 262-265 (1992-09-01)
Inhibition of human cytochrome P4502D6 (CYP2D6)-catalysed metabolism can lead to clinically significant alterations in pharmacokinetics. Since there is evidence that the selective serotonin reuptake inhibitor (SSRI) class of antidepressant drugs might inhibit CYP2D6, the effects of five SSRIs on human
J S Someren et al.
Biochemical and biophysical research communications, 260(3), 619-625 (1999-07-15)
We have shown that heat shock proteins (HSPs) associated with steroid receptor complexes are involved in the activation of calcineurin by aldosterone and dexamethasone. To determine whether HSPs directly interact with calcineurin, we measured the effect of HSPs 90, 70
M Ashkenazy-Shahar et al.
Molecular genetics and metabolism, 67(4), 334-342 (1999-08-13)
We studied here, in NIH-3T3 fibroblasts, the effect of the Ca(2+)-ionophore A23187 (which is known to increase intracellular-free Ca(2+)) on the control of glycolysis and cell viability and the action of calmodulin antagonists. Time-response studies with Ca(2+)-ionophore A23187 have revealed
Michael Stenger et al.
PloS one, 10(8), e0135571-e0135571 (2015-08-13)
The rise in antimicrobial resistance is a major global concern and requires new treatment strategies. The use of helper compounds, such as thioridazine (TDZ), an antipsychotic drug, in combination with traditional antibiotics must be investigated. The aim of this study
Evaluation of damage to DNA induced by UV-C radiation and chemical agents using electrochemical biosensor based on low molecular weight DNA and screen-printed carbon electrode.
Hlavata, L., et al.
Electrochimica Acta, 71, 134-139 (2012)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service