Here in this example, it says name the following heterocyclic molecule. Now, if we ignore the bromine for right now, we know that this heterocycle, this portion from what we've seen up above from our example and discussion of how to name these, we know that its name is thiazole. And we know following the rules that we'd start out numbering the higher priority heteroatom, which would be sulfur. Remember, open snacks nightly. Oxygen has a higher priority than sulfur.

Sulfur has a higher priority than nitrogen. Once we've numbered sulfur as location number 1, we count to the next heteroatom as quickly as we can. So, we'd have to go this way, 2, 3, 4, 5. Alright. This named thiazole is already discussing the sulfur and the nitrogen within our cyclic molecule.

All we have to do now is talk about the location of the substituent. Here the bromine. Here we're going to say it's on carbon number 5, so it's gonna or position 5. We're going to say 5-bromothiazole. So, this will be the name of this particular heterocyclic molecule.