Although it feels low yield, the AAMC decided to include this in their newest section bank (Section Bank V2 - Chemical and Physical Foundations of Biological Systems). I think it's important to include because none of the other primary sources reference this and it's a mistake to not include information that no amount of reasoning can get you the right answer to. Especially given how easy the information involved is to memorize and that the AAMC decided to test it in its most recent resource.