丙糖（Triose）是含有三个碳原子的一类单糖，共包含两个化合物：

丙糖是细胞呼吸过程中的重要物质。

D-甘油醛：

二羟基丙酮：

果聚糖： 菊粉 · 果聚糖β2→6

甘露聚糖

半乳聚糖

A triose is a monosaccharide, or simple sugar, containing three carbon atoms. There are only three possible trioses: L-Glyceraldehyde and D-Glyceraldehyde, both aldotrioses because the carbonyl group is at the end of the chain, and dihydroxyacetone, a ketotriose because the carbonyl group is the center the chain.