L-Mannose

L-Mannose

L-Mannose (CAS No. 10030-80-5) is a naturally occurring aldohexose sugar and the L-enantiomer of D-mannose, with the molecular formula C6H12O6 and molecular weight 180.16 g/mol.chemicalbook+2

Chemical Identity and Structure

• IUPAC Name: Aldehydo-L-manno-hexosepubchem.ncbi.nlm.nih
• Synonyms: L-Mannose, L-(-)-Mannose, Laevo-mannose, L-Mannopyranosechemicalbook+1
• Molecular Formula: C6H12O6pubchem.ncbi.nlm.nih+1
• Molecular Weight: 180.16 g/molchemicalbook+1
• Structure: L-Mannose is an enantiomer of the common sugar D-mannose, differing in stereochemistry at all asymmetric carbons.pubchem.ncbi.nlm.nih+1

Physical and Chemical Properties

• Appearance: White to off-white powder.chemicalbook
• Melting Point: 129–131 °C (literature).chemicalbook
• Boiling Point: Approximate 233 °C (estimated).chemicalbook
• Density: 1.2805 g/cm³ (estimated).chemicalbook
• Solubility: Soluble in water (about 0.1 g/mL), colorless and clear solution.chemicalbook
• Optical Rotation: -14° (C=4, H2O).chemicalbook
• pKa: Approx. 12.45 (predicted).chemicalbook

Biological and Functional Notes

• L-Mannose is less common in nature compared to its D-isomer but has roles in specific biochemical and research contexts.wikipedia
• It is involved in carbohydrate metabolism and glycosylation processes, especially in specialized biological studies on sugar isomers.wikipedia
• L-Mannose is useful in studying stereochemistry effects in carbohydrate biochemistry and potential in pharmaceutical applications.chemicalbook

Storage and Handling

• Storage Conditions: Recommended under inert atmosphere at 2-8 °C to preserve stability and prevent degradation.chemicalbook

Regulatory and Identification Numbers

L-Mannose serves mostly in research for stereochemical carbohydrate studies and specialized biochemical assays due to its rare and specific isomeric properties.wikipedia+1