carbamate

Thân thiện

A chemist carefully weighs a white carbamate powder in the laboratory.

Definition

Noun: 1. A salt or ester of carbamic acid: A chemical compound formed when carbamic acid reacts with a base (forming a salt) or an alcohol (forming an ester). Carbamates are a significant class of compounds in organic chemistry, pharmacology, and agriculture.

Usage Examples

• Noun:
  • The laboratory synthesized a new carbamate to test its insecticidal properties.
  • Some carbamate compounds are used in medicine as muscle relaxants.
  • The study focused on the environmental degradation of the carbamate pesticide.

Advanced Usage

• In compound terms: The term "carbamate" frequently appears as part of more specific chemical names, indicating its role as a functional group.
  • The "urethane" group is technically an ethyl carbamate.
  • "Neostigmine" is a carbamate-based cholinesterase inhibitor used to treat myasthenia gravis.

Variants and Related Words

• Carbamic acid (n): The unstable parent acid, H₂NCOOH, from which carbamates are derived.
• Carbamoyl (adj): Relating to the H₂NCO– group, as in "carbamoyl phosphate."
• Polycarbamate (n): A polymer containing multiple carbamate linkages.

Synonyms

• Urethane (n): Specifically refers to ethyl carbamate, though often used informally for polyurethane polymers. Not a perfect synonym for all carbamates.
• Aminoformate (n): A systematic but less common name.

Related Phrases and Terms

• Carbamate insecticide (n): A class of pesticides (e.g., carbaryl, aldicarb) that work by inhibiting the enzyme acetylcholinesterase.
• Carbamate ester (n): A carbamate where the ionic hydrogen is replaced by an organic group (R–O–CO–NH₂ or R–O–CO–NHR').
• Carbamate salt (n): An ionic compound containing a carbamate anion (H₂NCOO⁻ or RNHCOO⁻) and a metal or ammonium cation.

Học thuật

Noun

1. a salt (or ester) of carbamic acid