acyl

American  

[as-il, -eel] / ˈæs ɪl, -il /

adjective

Chemistry.

1. containing the acyl group.

---

acyl British  

/ ˈeɪsaɪl /

noun

1. (modifier) of, denoting, or containing the monovalent group of atoms RCO-, where R is an organic group

   acyl group or radical

   acyl substitution

2. an organometallic compound in which a metal atom is directly bound to an acyl group

---

acyl Scientific  

/ ăs′əl /

1. An organic compound containing the group RCO, where R is a halogen. Acyls are formed from organic acids by replacing the hydroxyl group (OH) within the carboxyl group (COOH) with a halogen. For example, acetyl chloride (CH ₃ COCl) is formed by replacing the hydroxyl group of acetic acid (CH ₃ COOH) with a chlorine atom. The names of acyls are formed by replacing the suffix –ic of the acid's name with –yl.

---

Etymology

Origin of acyl

1895–1900; < German: an organic radical derived from an acid; see acid, -yl

Example Sentences

The method involves combining three chemicals: an amine "head," two alkyl epoxide "tails" and, finally, two acyl chloride "branched tails."

From Science Daily • Feb. 26, 2024

However, the search for the longer full pathway, the acyl chain which forms one crucial part of the molecule that stimulates immune cells, remained unfinished.

From Science Daily • Jan. 26, 2024

“The length of the acyl chain has enormous importance in cell physiology and in cell pathophysiology,” Futerman says.

From Science Magazine • Mar. 15, 2023

“These trichomes produce acyl sugars and other compounds that repel or are toxic to a wide range of insects,” says Hanson.

From Nature • Apr. 25, 2017

From these acyl derivatives the elements of water are removed, either by simple heating or by boiling their aqueous solution; this elimination is accompanied by the formation of the azoxime ring.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" by Various