Pentose-derivative, sugar basis of DNA.
The difference between deoxyribose and ribose is just as the name implies, that is, deoxyribose is lacking one oxygen atom relative to ribose. As a consequence, while the molecular formula of ribose is C5H10O5, i.e., (CH2O)5, that of deoxyribose is C5H10O4. Note that deoxyribonucleotides consist of the sugar deoxyribose, a nitrogenous base, and a phosphate group.
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