Side-chain

Side-chain, side chain, or sidechain may refer to:

• Side chain, a chemical group attached to the main chain or backbone of a molecule, such as a protein
• Substituent, an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon
• Side-chaining, an effect in digital audio processing
• Sidechain (ledger), a designation for a particular blockchain
• "Sidechain", a song by Knuckle Puck from the album 20/20

See also

• Backbone chain
• Branching (polymer chemistry)
• Pendant group