2'-deoxyuridine is a pyrimidine 2'-deoxyribonucleoside having uracil as the nucleobase. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is functionally related to a uracil.

2'-deoxycytidine is a pyrimidine 2'-deoxyribonucleoside having cytosine as the nucleobase. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is functionally related to a cytosine.