Carboxylic vs. Hexose acids

[Carboxylic]

Hello to all: Where can I find a list of all Carboxylic acids and Hexose acids? Is
there an easy way to tell them apart? Can a substrate be both? Can a
Carboxylic acid also be considered a Dicarboxylic acid? I need a good
resource to find differences between, say, Gluconic and Glucuronic
acids. Some internet resources say that Guconic acid is a Hexose acid
while Glucuronic acid is a Carboxylic acid, others say they are both
Hexose acids.. I am researching microbial metabolic substrates but need
some fundamental background. Any help is greatly appreciated. Thank you!

I see Hexose acids are derived from oxidized hexose sugars - i.e., sugars with six Carbon molecules.

 

And Carboxylic acids are derived from sugars that have a carboxyl group on one of the carbons while Dicarboxylic acids have two carboxyl groups.

 

I assume that means that one molecule, say Glucuronic acid, could be both a Hexose acid, and also be a Carboxylic acid.

 

Also, Malic acid has two carboxyl groups and therefore is simultaneously a Carboxylic acid and a Dicarboxylic acid (though the default would be Dicarboxylic acid as it is more descreptive?)

 

Any further feedback or direction to resources is greatly appreciated.

[hypervalent_iodine]

I'm not sure what you mean by hexose acid as this is not a standard term. Carboxylic acids are organic compounds containing a -COOH group, where one of the oxygens is double bonded to the carbonyl carbon and the other is an OH group bound to the same carbon. The H on the OH part of the functional group is acidic and fairly easily removed. You would not find a list of all carboxylic acids because this would be too broad of a category and the number of compounds that could contain such a functionality would be extremely large.

 

Gluconuronic acid contains a carboxylic acid group at the C-6 position and is a derivative of normal glucose, which would normally contain an OH group at the C-6 position. Thus you would say that gluconuronic acid is a carboxylic acid.

 

Malic acid contains two individual carboxylic acid groups, which means you would refer to it as a diacid or a dicarboxylic acid.