Standard Lemma guide

resiniferatoxin

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

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Pronunciation

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1

noun

Meaning 1

A naturally occurring ultrapotent capsaicin analogue (having in its pure form a Scoville heat unit measure of 16,000,000,000) that activates the receptor TRPV1 (aka vanilloid receptor 1 or the capsaicin receptor) in a subpopulation of primary afferent sensory neurons involved in nociception.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

Examples

  • 1992, Arpad Szallasi, Peter M. Blumberg, 27: Resiniferatoxin, P. Michael Conn (editor), Neurotoxins, Harcourt Brace Jovanovich (Academic Press), page 368, An exciting recent advance in the vanilloid field has been our discovery that resiniferatoxin (RTX), a naturally occurring diterpene combining structural features of the phorbol ester tumor promoters and of capsaicin (see structures in Fig. 1), functions as an ultrapotent capsaicin analog (4—6) and that the esterification of other phorbol-related diterpenes with homovanillic acid at the C-20 position yields synthetic vanilloids of the RTX class with unique spectra of action (7).

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From resinifera + toxin, in reference to the plant Euphorbia resinifera (resin spurge), from which it is extracted.