What does the lower case "n-" stand for in name of compounds??

[pineappletree]

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Like n-hexanoic acid

I thought that it was referring to an attatched amine, but what does it mean??

 

[AMF11]

The lower case "n" means normal hexanoic acid, which refers to it being unbranched, since there can be several isomers of that compound.

 

[Pulsar]

Like n-hexanoic acid

I thought that it was referring to an attatched amine, but what does it mean??

A capital N indicates a substituent is attached to a nitrogen. Like N-Methylmorpholine, where the methyl group is attached to the nitrogen.