ピリドキサール

Pyridoxal

理想化された骨格式
結晶構造に基づくボールアンドスティックモデル。酸性のフェノール基が塩基性のピリジン基にプロトンを供与して双性イオンを形成し、ヒドロキシメチル基がアルデヒド基と反応してヘミアセタールを形成していることに注意。
Names
Preferred IUPAC name 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde
Identifiers
CAS Number	66-72-8 Y 65-22-5 (hydrochloride) Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:17310 Y
ChEMBL	ChEMBL102970 Y
ChemSpider	1021 Y
DrugBank	DB00147 Y
KEGG	C00250 Y
PubChem CID	1050
UNII	3THM379K8A Y 1416KF0QBC (hydrochloride)  Y
InChI InChI=1S/C8H9NO3/c1-5-8(12)7(4-11)6(3-10)2-9-5/h2,4,10,12H,3H2,1H3 Y Key: RADKZDMFGJYCBB-UHFFFAOYSA-N Y InChI=1/C8H9NO3/c1-5-8(12)7(4-11)6(3-10)2-9-5/h2,4,10,12H,3H2,1H3 Key: RADKZDMFGJYCBB-UHFFFAOYAP
SMILES O=Cc1c(O)c(C)ncc1CO
Properties
Chemical formula	C8H9NO3
Molar mass	167.16 g/mol
Melting point	165 °C (329 °F; 438 K) (decomposes)
Related compounds
Related arylformaldehydes	Damnacanthal Gossypol

Pyridoxal is one form of vitamin B₆.

Some medically relevant bacteria, such as those in the genera Granulicatella and Abiotrophia, require pyridoxal for growth. This nutritional requirement can lead to the culture phenomenon of satellite growth. In in vitro culture, these pyridoxal-dependent bacteria may only grow in areas surrounding colonies of bacteria from other genera ("satellitism") that are capable of producing pyridoxal.

Pyridoxal is involved in what is believed to be the most ancient reaction of aerobic metabolism on Earth, about 2.9 billion years ago, a forerunner of the Great Oxidation Event.

See also

• Pyridoxal phosphate