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Q. Which set of terms correctly identifies the carbohydrate shown?
1. Pentose 2. Hexose 3. Aldose 4. Ketose 5. Pyranose 6. FuranoseChemistry Question Image

KEAMKEAM 2008Biomolecules

Solution:

This compound contains five carbon atoms, so it is a pentose. Its first carbon contains $ -H $ and $ -OH $ group. This suggests that it is an aldose (ie, contains aldehyde group). Since its structure is similar to furan (a heterocyclic compound), so it has furanose structure. Hence, this compound is a pentose, aldose and have furanose structure.

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