Mercaptan Definition

This is the chemical structure of cysteine.
This is the chemical structure of the mercaptan compound cysteine. Todd Helmenstine

Definition: Mercaptan is an organic sulfur compound composed of an alkyl or aryl group and a thiol group.

General formula: R-SH where R is an alkyl or aryl group.

Also Known As: thiol

Examples: The amino acid cysteine is a mercaptan.

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Helmenstine, Anne Marie, Ph.D. "Mercaptan Definition." ThoughtCo, Feb. 7, 2017, thoughtco.com/mercaptan-definition-608740. Helmenstine, Anne Marie, Ph.D. (2017, February 7). Mercaptan Definition. Retrieved from https://www.thoughtco.com/mercaptan-definition-608740 Helmenstine, Anne Marie, Ph.D. "Mercaptan Definition." ThoughtCo. https://www.thoughtco.com/mercaptan-definition-608740 (accessed May 24, 2018).