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