Basic information Safety Supplier Related

4-PYRIDOXIC ACID

Basic information Safety Supplier Related

4-PYRIDOXIC ACID Basic information

Product Name:
4-PYRIDOXIC ACID
Synonyms:
  • 3-hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxylicaci
  • 4-PYRIDOXIC ACID
  • 4-Pyridoxicacidcrystalline
  • 3-hydroxy-5-(hydroxymethyl)-2-methyl-pyridine-4-carboxylic acid
  • Pyridoxic Acid
  • 4-Pyridoxic
  • 2-Methyl-3-hydroxy-4-carboxy-5-hydroxymethylpyridine, 3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxylic acid
  • 2-Methyl-3-hydroxy-5-(hydroxymethyl)pyridine-4-carboxylic acid
CAS:
82-82-6
MF:
C8H9NO4
MW:
183.16
EINECS:
201-440-8
Product Categories:
  • Heterocyclic Compounds
Mol File:
82-82-6.mol
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4-PYRIDOXIC ACID Chemical Properties

Melting point:
258-261 °C (dec.)(lit.)
Boiling point:
584.5±50.0 °C(Predicted)
Density 
1.480±0.06 g/cm3(Predicted)
storage temp. 
?20°C
pka
0.47±0.25(Predicted)
Merck 
13,8071
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
2
RTECS 
NS1800000
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4-PYRIDOXIC ACID Usage And Synthesis

Synthesis Reference(s)

Journal of Heterocyclic Chemistry, 4, p. 625, 1967 DOI: 10.1002/jhet.5570040427

Enzyme inhibitor

This oxidized derivative (FW = 171.15 g/mol) of pyridoxal is the chief catabolic product of pyridoxine, pyridoxal, and pyridoxamine degradation; it can be isolated from human urine. The carboxyl group has a pKa value of 5.50 while the phenolic OH has a value of 9.75. 4-Pyridoxic acid has a blue fluorescence which is maximal between pH 3 and 4. Heating 4-pyridoxic acid in 0.5 N acid will convert the metabolite to its lactone, which has an even stronger fluorescence. Target(s): dextransucrase; glucose dehydrogenase; pyridoxal dehydrogenase; and pyridoxaminephosphate oxidase.

4-PYRIDOXIC ACIDSupplier

Energy Chemical
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