explain how glyceraldehyde is named

Glyceraldehyde is named based on its chemical structure and the IUPAC (International Union of Pure and Applied Chemistry) nomenclature rules. Here are the steps:

1. Identify the functional group: Glyceraldehyde is an aldehyde, which is a functional group characterized by a carbonyl center (a carbon double bonded to oxygen) with the carbon atom also bonded to hydrogen and to an R group, which can be any generic alkyl or side chain. The suffix for aldehydes in IUPAC nomenclature is "-al".

2. Identify the longest carbon chain containing the functional group: In the case of glyceraldehyde, the longest carbon chain containing the aldehyde group is three carbons long. A three carbon chain is named "propane" in IUPAC nomenclature.

3. Modify the base name to indicate the presence of the aldehyde group: The base name "propane" is modified to "propanal" to indicate the presence of the aldehyde group. However, because the aldehyde group is always at the end of the chain, it is understood to be on carbon 1, so it is not necessary to number it.

4. Identify and name any additional functional groups: Glyceraldehyde also has two hydroxyl (-OH) groups, which are alcohol functional groups. In IUPAC nomenclature, alcohols are indicated by the suffix "-ol". Because there are two, we also need to indicate their positions on the carbon chain.

5. Combine all of the above information to name the compound: The full IUPAC name for glyceraldehyde is 2,3-dihydroxypropanal. This indicates a three carbon chain (propane) with an aldehyde group (propanal), and two hydroxyl groups on the second and third carbons (2,3-dihydroxy).

However, in common usage, this compound