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Abbott Nutrition Division

Simultaneous Determination of Total Vitamin B

6,

B

2,

B

3

and B

1

in Infant

Formula Products by LC-MS/MS Using Enzymatic Digestion

b)

Pyridoxal

Pyridoxal is one of the three natural forms of

vitamin B6,

along with

pyridoxamine

and

pyridoxine

(also called "pyridoxol"). Pyridoxal is the primary inherent for of B6 in animal based

food, and therefore the primary form in milk and milk powders.

The molecular formula for Pyridoxal is C

8

H

9

NO

3

and its molecular weight is 167.16 g/mol.

Common synonyms include 3-hydroxy-5-(hydroxymethyl)-2-methylpyridine-4-carbaldehyde

The CAS# for Pyridoxal is 66-72-8.

The chemical structure of Pyridoxal is shown below:

c)

Pyridoxamine

Pyridoxamine is one of the compounds composing

vitamin B6.

Pyridoxamine is based on a

pyridine

ring, with

hydroxyl, methyl,

aminomethyl, and hydroxymethyl

substituents.

It differs

from

pyridoxine

by the substitution at the 4-position.

Common synonyms include 4-(aminomethyl)-5-(hydroxymethyl)-2-methylpyridin-3-ol

The CAS# for Pyridoxamine is 86-87-0.

The chemical structure of Pyridoxamine is shown below:

22

BVit-02

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