(±)-Verapamil hydrochloride

≥99% (titration), powder

5-[N-(3,4-Dimethoxyphenylethyl)methylamino]-2-(3,4-dimethoxyphenyl)-2-isopropylvaleronitrile hydrochloride
Linear Formula:
(CH3O)2C6H3CH2CH2N(CH3)(CH2)3C[C6H3(OCH3)2][CH(CH3)2]CN · HCl
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


≥99% (titration)






142 °C (dec.) (lit.)


methanol: 50 mg/mL
ethanol: soluble



SMILES string




InChI key


Gene Information

human ... ADRA1A(148), ADRA1B(147), ADRA1D(146), CACNA1C(775), CACNA1D(776), CACNA1F(778), CACNA1S(779)

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Verapamil hydrochloride has been used:
  • to inhibit calcium oscillation in fertilized oocyte
  • to block calcium channel, thereby blocking the action of IL-1β (interleukin-1β), resulting in membrane depolarization
  • to investigate the effect of verapamil on cytotoxicity of 1,3-dilinoleoylglycerol (DLG)


1, 5, 10 g in glass bottle

Biochem/physiol Actions

α1-adrenoceptor antagonist; L-type calcium channel blocker. Blocks L-type Ca2+ channels in smooth and cardiac muscle, induces apoptosis of human primary and metastatic colon adenocarcinoma cells in vitro. Drug resistance reversal agent acting on Pgp, e.g. decrease renal tubule elimination of digoxin. Increases basal ATPase activity of Pgp. Substrate of Cyp3A4 and CYP2C6.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

Legal Information

LOPAC is a registered trademark of Sigma-Aldrich Co. LLC


Skull and crossbonesEnvironment

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN2811 - class 6.1 - PG 3 - EHS - Toxic solids, organic, n.o.s., HI: all

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Abdalla Elbialy et al.
Biology, 9(6) (2020-06-11)
In our previous publication, it was shown that growth hormone (GH) excess in acromegaly affects the cell integrity of somatic cells through increased DNA damage throughout the body and impaired DNA repair pathways. Acromegaly is a hormone disorder pathological condition...
O V Kolomytkin et al.
The American journal of physiology, 276(1 Pt 1), C9-C15 (1999-01-14)
The possibility that membrane depolarization of synovial fibroblasts caused by interleukin-1beta (IL-1beta) was mediated by protein kinase C (PKC) and Ca2+ influx was studied using inhibitor and activator analysis. The effect of IL-1beta was blocked by bisindolylmaleimide I, an inhibitor...
Françoise Nepveu et al.
Journal of medicinal chemistry, 53(2), 699-714 (2009-12-18)
A series of 66 new indolone-N-oxide derivatives was synthesized with three different methods. Compounds were evaluated for in vitro activity against CQ-sensitive (3D7), CQ-resistant (FcB1), and CQ and pyrimethamine cross-resistant (K1) strains of Plasmodium falciparum (P.f.), as well as for...
Y Shiina et al.
Journal of reproduction and fertility, 97(1), 143-150 (1993-01-01)
Changes in intracellular calcium concentration ([Ca2+]i) in fertilized mouse oocytes were measured using the calcium-sensitive dye, fura-2. After fertilization, an initial long-lasting [Ca2+]i increase was followed by a periodic [Ca2+]i increase. The periodic increase in [Ca2+]i persisted for 1 to...
Yvonne E Arnold et al.
Pharmaceutics, 11(3) (2019-03-25)
Drug absorption across viable porcine intestines was investigated using an Ussing chamber system. The apparent permeability coefficients, Papp,pig, were compared to the permeability coefficients determined in humans in vivo, Peff,human. Eleven drugs from the different Biopharmaceutical Classification System (BCS) categories...
AldeRed™ 588-A is a red fluorescent live cell probe that detects ALDH activity used to identify cancer stem cells and progenitor cells in culture. Cancer stem cells (CSCs) are subpopulations of cancer cells that can self-renew, generate diverse cells in the tumor mass, and sustain tumorigenesis. Some researchers believe that cancer arises from cancer stem cells that originate as a result of mutational hits on normal stem cells.
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