from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An aldehyde, C8H9NO3, one of several active forms of pyridoxine, important in amino acid synthesis.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the three natural forms of vitamin B6

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a B vitamin that is essential for metabolism of amino acids and starch


pyridox(ine) + -al3.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • According to the study authors, the gene variant may affect the activity of an enzyme in the brain, called pyridoxal kinase (PDXK).

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  • In each of the 19 pathways for the generation of chiral amino acids, the stereochemistry at the ╬▒-carbon atom is established by a transamination reaction that involves pyridoxal phosphate.

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  • Vitamin B6, a water-soluble vitamin that exists as pyridoxine, pyridoxal, and pyridoxamine, is found in beans, meat, fish, and some fruits and vegetables, like spinach and avocado.

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  • Vitamin B6 (100 mg as pyridoxine HCI, 50 mg pyridoxamine from pyridoxamine DiHCI, and 2.5 mg pyridoxal 5 'phosphate coenzyme) 800 mcg

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  • Vitamin B6 (100 mg as pyridoxine HCI, 50 mg pyridoxamine from pyridoxamine DiHCI, and 2.5 mg pyridoxal 5 'phosphate coenzyme)

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  • Among other findings, the research group detected increased activity of the pyridoxal kinase gene.

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  • In doing so, they discovered a gene variant which increases the risk for Parkinson's disease and which may lead to a modified quantity or activity of the enzyme pyridoxal kinase (PDXK) in the brain.

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  • Vitamin B6 is essential in all organisms, due to its requirement as a cofactor in the form of pyridoxal 5'-phosphate (PLP) for key metabolic enzymes.

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  • In the body, however, the parahydroxymethyl moiety is oxidized to an aldehyde and the similar group in the meta position is phosphorylated, resulting in the biologically active pyridoxal phosphate..


  • Supplements Vitamin B6, also known as pyridoxine, pyridoxal and pyriodoxamine, is a water-soluble vitamin involved in a wide variety of functions throughout the body.

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