Pyridoxal
IUPAC name	3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde
Identifiers
CAS number	66-72-8 Y, 65-22-5 (hydrochloride)
SMILES	OCC1=CN=C(C)C(O)=C1C=O
ChemSpider ID	1021
Properties
Molecular formula	C8H9NO3
Molar mass	167.16 g/mol
Melting point	165 °C (decomp.)
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Pyridoxal is one of the three natural forms of vitamin B₆, along with pyridoxamine and pyridoxine (also called "pyridoxol"). All of these forms are converted in the human body into a single biologically active form, pyridoxal 5-phosphate. All three forms of vitamin B₆ are heterocyclic organic compounds. Green plants are a natural source of pyridoxal, and its deficiency in the human body can lead to serious complications such as epilepsy and seizures.

There are generally three pyridoxal-phosphate (PLP) reactions: transamination, alpha elimnation, and beta-elimination.

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