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BIO NMDCAT Carbohydrates
nmdcat.online June 27, 2026

The general term for a stereoisomer of a sugar that differs in configuration at only one specific carbon atom is a(n)

A. Enantiomer
B. Anomer
C. Epimer
✓
D. Zwitterion

📝 Explanation

Epimers are a subclass of diastereomers that differ in configuration at exactly one chiral center. For example, D-glucose and D-galactose are C-4 epimers, and D-glucose and D-mannose are C-2 epimers. Anomers are epimers specifically at the hemiacetal/hemiketal carbon.

📖 Additional Information

  • Enantiomer
  • Anomer
  • Epimer
  • Zwitterion

Epimers are a subclass of diastereomers that differ in configuration at exactly one chiral center. For example, D-glucose and D-galactose are C-4 epimers, and D-glucose and D-mannose are C-2 epimers. Anomers are epimers specifically at the hemiacetal/hemiketal carbon.

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