Thiol Definition

Acetylcysteine mucolytic drug, molecular model

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Definition: Thiol is an organic sulfur compound composed of an alkyl or aryl group and a sulfur-hydrogen group.
General formula: R-SH where R is an alkyl or aryl group.

The S-H group is also known as a thiol group.

Also Known As: mercaptan

Examples: The amino acid cysteine is a thiol.