Catalog No.S1799 Synonyms: CVT 303, RS 43285-003

For research use only.

Ranolazine (CVT 303, RS 43285-003) is a calcium uptake inhibitor via the sodium/calcium channel, used to treat chronic angina.

Ranolazine  Chemical Structure

CAS No. 95635-55-5

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Biological Activity

Description Ranolazine (CVT 303, RS 43285-003) is a calcium uptake inhibitor via the sodium/calcium channel, used to treat chronic angina.
Calcium channel [1]
In vitro

Ranolazine is found to bind more tightly to the inactivated state than the resting state of the sodium channel underlying I(NaL), with apparent dissociation constants K(dr)=7.47 mM and K(di)=1.71 mM, respectively. Ranolazine at 5 mM and 10 mM reversibly shortens the duration of TCs and abolishes the after contraction.[1] Ranolazine inhibits the late component of INa and attenuates prolongation of action potential duration when late INa is increased, both in the absence and presence of IK-blocking drugs. Ranolazine (10 mM) reduces by 89% the 13.6-fold increase in variability of APD caused by 10 nM ATX-II. [2]

In vivo

Ranolazine significantly and reversibly shortens the action potential duration (APD) of myocytes stimulated at either 0.5 or 0.25 Hz in a concentration-dependent manner in left ventricular myocytes of dogs. [1] Ranolazine (10 mM) significantly increases glucose oxidation 1.5-fold to 3-fold under conditions in which the contribution of glucose to overall ATP production is low (low Ca, high FA, with insulin), high (high Ca, low Fa, with pacing), or intermediate in working heart of rats. Ranolazine (10 mM) similarly increases glucose oxidation in normoxic Langendorff hearts (high Ca, low FA; 15 mL/min) of rats. Ranolazine significantly improves functional outcome in reperfused ischemic working hearts, which is associated with significant increases in glucose oxidation. [3]

Protocol (from reference)

Solubility (25°C)

In vitro

Chemical Information

Molecular Weight 427.54


CAS No. 95635-55-5
Storage 3 years -20°C powder
2 years -80°C in solvent

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Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03486561 Unknown status Drug: Ranolazine Chronic Stable Angina OBS Pakistan April 1 2018 Phase 4
NCT03044964 Unknown status Drug: Ranolazine|Drug: Placebo Angina Amit Malhotra MD|Gilead Sciences|Stern Cardiovascular Foundation Inc. January 10 2017 Phase 4
NCT02252406 Completed Drug: Ranolazine|Other: Placebo Stable Angina|Metabolic Syndrome University of Florida September 2015 Phase 4
NCT02360397 Completed Drug: ranolazine Ventricular Premature Complexes|Myocardial Ischemia Kent Hospital Rhode Island|Gilead Sciences December 2014 Phase 2
NCT02156336 Terminated Drug: Ranolazine|Drug: Placebo Diabetic Peripheral Neuropathic Pain Horizons International Peripheral Group|Gilead Sciences May 2014 Phase 4

(data from https://clinicaltrials.gov, updated on 2022-01-17)

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