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SHEET /m/flecainide · PubChem CID 3356 · CAS 54143-55-4 · REV 2026.07

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Flecainide

from source

C17H20F6N2O3 · 414.34 g/mol

Flecainid Isis · Tambocor

What is Flecainide?

A heart rhythm medicine sold as Tambocor, used for some fast irregular heartbeats. It slows electrical signals by blocking sodium channels in heart muscle. from source

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Fig. 1 · 2D structure RDKit

SMILESC1CCNC(C1)CNC(=O)C2=C(C=CC(=C2)OCC(F)(F)F)OCC(F)(F)F

Where you'll find it

Dispensed on prescription, not sold on a shelf. See the rest of the prescription medicine group.

Toxicity & hazards

WarningIrritantHealth hazardH302, H336, H361from source

Sources & methodology

PubChem CID
3356
Wikidata
Q421381
Structure
PubChem → RDKit
Data refreshed

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