What's the plural form of amphopeptone? Here's the word you're looking for.
Answer
The noun amphopeptone can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be amphopeptone.
However, in more specific contexts, the plural form can also be amphopeptones e.g. in reference to various types of amphopeptones
or a collection of amphopeptones.