What does a 5840N alcohol?

There's no recognized alcohol with the designation "5840N." This could be a few things:

* Misspelling: It's possible there's a typo in the name. Double-check the source of this information.

* Specific Formula: "5840N" might be a code or formula used in a specific context, like a research lab or industrial process. Without more context, it's difficult to understand its meaning.

* Made-up term: It's possible this term doesn't have a real meaning related to alcohol.

To get more specific information, please provide:

* The context where you encountered this term. Where did you see it?

* Any other details you have. Is there a description or any other information associated with "5840N alcohol"?

Once you provide more context, I might be able to help you figure out what "5840N alcohol" refers to.