Pyridoxine (Vitamin B6) Powder
Other Names: Vitamin B6, Pyridoxol, Pyridoxine

CAS Number: 65-23-6
Sum Formula: C₈H₁₁NO₃
Molar Mass: 169.18 g/mol
Appearance: White to off-white crystalline powder

Pyridoxine is one of the three natural forms of vitamin B6, alongside pyridoxal and pyridoxamine. It is a water-soluble derivative of 3-hydroxy-2-methylpyridine-5-methanol and serves as a precursor for active coenzymes involved in numerous biochemical reactions, especially those associated with amino acid metabolism.

Chemical and Physical Properties
Density: ~1.4 g/cm³ (estimated)
Melting Point: 159–162°C
Boiling Point: Decomposes before boiling
Solubility in Water: Freely soluble (~20 g/100 mL at 25°C)
Solubility in Other Solvents: Slightly soluble in alcohol; practically insoluble in ether and chloroform
Odor: Odorless or faint characteristic

Applications
Biochemical Research: Used in the study of enzymatic mechanisms involving transamination, decarboxylation, and racemization.
Organic Synthesis: Precursor for the synthesis of vitamin B6 derivatives and pyridoxine analogues.
Analytical Chemistry: Employed as a standard compound in vitamin quantification assays.
Material Science: Studied for incorporation into polymeric matrices for biofunctional materials.
Photochemistry: Explored for its role in photoprotective and electron-transfer systems.

Safety

Signal Word: Warning

Handling and Storage
Storage Conditions: Store in a tightly sealed container in a cool, dry, and dark place. Protect from heat, light, and moisture to prevent degradation.
Handling Precautions: Avoid dust formation and direct contact with skin and eyes. Use appropriate PPE and handle under standard laboratory safety protocols.