Also found in: Medical.


A salt of a sulfonic acid of naphthalene, used in the preparation of various pharmaceuticals.

[Alteration of nap(hthalene)sul(fon)ate.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Bryan, 29, of Wyoming, R.I., charged with possession of propoxyphene napsylate with acetaminophen and possession of dicyclomine , continued to July 7.
Medications combining both a narcotic and nonnarcotic analgesic such as codeine plus acetaminophen (Tylenol[R] #3), hydrocodone plus acetaminophen (Vicodin[R], Lorcet[R], Norco[R]), or propoxyphene napsylate plus acetaminophen (Darvocet[R]), can be the initial pain medication used.
Propacet, napsylate (Darvocet), TEVA Propoxyphene nap- Acetaminophen Pharmaceuticals USA sylate, (Propracet and Pro- Acetaminophen poxyphene Napsylate and Acetaminophen), Mylan Pharmaceuti- cals Inc.