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Sucralose is made from sucralose, with chlorination of 3 of the hydroxyl groups. If broken up into the 2 saccharide-type units, you'll get 1,6-dichloro-1,6-dideoxyfructose and 4-chloro-4-deoxy-D- galactose. Firstly, are those 2 compounds considered to be monosaccharides/sugars? And if so, is sucralose considered a disaccharide/sugar?

They wouldn't conform to the regular general formula for monosaccharides, (CH2O)x, but IUPAC Gold Book (https://goldbook.iupac.org/terms/view/M04021) says "for Monosaccharides - A term which includes aldoses, ketoses and a wide variety of derivatives. Derivation includes oxidation, deoxygenation, introduction of other substituents, alkylation and acylation of hydroxy groups, and chain branching." At what point would a derivative not be considered a monosaccharide anymore?

Sucralose and sucrose

smw
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    I think as long as the ring structure is intact with the ether bond one may still call it a carbohydrate derivative. For instance cylcodextrins are heavily derivatized for chromatographic purposes such as permethylated cyclodextrin. It is a derivative but most of its hydroxyls have been replaced by methyl groups. – AChem May 19 '22 at 05:26

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