Mercapto Group Definition

A chemical group showing a mercapto group
The left-hand side of this chemical group (cysteine) is a mercapto group. Todd Helmenstine

Definition: A mercapto group is a fuctional group containing a sulfur atom bonded to a hydrogen atom. General formula: -SH

Also Known As: thiol group, sulfanyl group

Examples: The amino acid cysteine contains a mercapto group.

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Helmenstine, Anne Marie, Ph.D. "Mercapto Group Definition." ThoughtCo, Aug. 25, 2020, thoughtco.com/definition-of-mercapto-group-605335. Helmenstine, Anne Marie, Ph.D. (2020, August 25). Mercapto Group Definition. Retrieved from https://www.thoughtco.com/definition-of-mercapto-group-605335 Helmenstine, Anne Marie, Ph.D. "Mercapto Group Definition." ThoughtCo. https://www.thoughtco.com/definition-of-mercapto-group-605335 (accessed September 27, 2021).