Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-12-10 18:28:45 UTC
Update Date2024-04-30 19:31:47 UTC
Metabolite IDMMDBc0000325
Metabolite Identification
Common Name4-Pyridoxic acid
Description4-Pyridoxic acid is a member of the class of compounds known as methylpyridines. More specifically it is a 2-methylpyridine derivative substituted by a hydroxy group at C-3, a carboxy group at C-4, and a hydroxymethyl group at C-5. 4-Pyridoxic acid is the catabolic product of vitamin B6 (also known as pyridoxine, pyridoxal and pyradoxamine) and is excreted in the urine. Urinary levels of 4-pyridoxic acid are lower in females than in males and will be reduced even further in persons with a riboflavin deficiency. 4-Pyridoxic acid is formed by the action of aldehyde oxidase I (an endogenous enzyme) and by microbial enzymes (pyridoxal 4-dehydrogenase), an NAD-dependent aldehyde dehydrogenase. 4-pyridoxic acid can be further broken down by the gut microflora via the enzyme known as 4-pyridoxic acid dehydrogenase. This enzyme catalyzes the four-electron oxidation of 4-pyridoxic acid to 3-hydroxy-2-methylpyridine-4,5-dicarboxylate, using nicotinamide adenine dinucleotide (NAD) as a cofactor.
Structure
Synonyms
ValueSource
2-Methyl-3-hydroxy-4-carboxy-5-hydroxymethylpyridineChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxylic acidChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinic acidChEBI
4-Pyridoxinecarboxylic acidChEBI
4-Pyridoxinic acidChEBI
4-PyridoxinsaeureChEBI
4-Pyridoxylic acidChEBI
Pyridoxic acidChEBI
3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxylateGenerator
3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinateGenerator
4-PyridoxinecarboxylateGenerator
4-PyridoxinateGenerator
4-PyridoxylateGenerator
PyridoxateGenerator
4-PyridoxateGenerator
3-Hydroxy-5-(hydroxymethyl)-2-methyl-isonicotinateHMDB
3-Hydroxy-5-(hydroxymethyl)-2-methyl-isonicotinic acidHMDB
3-Hydroxy-5-hydroxymethyl-2-methyl-isonicotinateHMDB
3-Hydroxy-5-hydroxymethyl-2-methyl-isonicotinic acidHMDB
3-Hydroxy-5-hydroxymethyl-2-methyl-isonicotinsaeureHMDB
4 Pyridoxinic acidMeSH, HMDB
Pyridoxinecarboxylic acidMeSH, HMDB
4 Pyridoxylic acidMeSH, HMDB
4 Pyridoxic acidMeSH, HMDB
Molecular FormulaC8H9NO4
Average Mass183.1614
Monoisotopic Mass183.053157781
IUPAC Name3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carboxylic acid
Traditional Namepyridoxic acid
CAS Registry NumberNot Available
SMILES
CC1=NC=C(CO)C(C(O)=O)=C1O
InChI Identifier
InChI=1S/C8H9NO4/c1-4-7(11)6(8(12)13)5(3-10)2-9-4/h2,10-11H,3H2,1H3,(H,12,13)
InChI KeyHXACOUQIXZGNBF-UHFFFAOYSA-N