What is the relationship between D-erythrose and D-threose?

Question

Quizplus · Accepted Answer

D-erythrose and D-threose are diastereomers because they have the same chemical formula and connectivity but differ in their spatial arrangement around one or more stereocenters. In particular, D-erythrose has two hydroxyl groups on opposite sides of its carbon chain, while D-threose has two hydroxyl groups on the same side (cis configuration). As diastereomers, they are not mirror images of each other and exhibit different physical and chemical properties.

What Is the Relationship Between D-Erythrose and D-Threose