## Numbering Priority

Cole_Heramb_2E
Posts: 7
Joined: Wed Nov 18, 2015 3:00 am

### Numbering Priority

Okay I just wanted to get this straight. When numbering a molecule: Functional groups have priority of course, then comes alkene/alkyne special bonds, then substituents?

Posts: 28
Joined: Wed Sep 21, 2016 1:59 pm

### Re: Numbering Priority

Yes, that seems correct. Substituents also get priority from alphabetical order if the numbering is the same from either side.

Dianna Grigorian 1C
Posts: 72
Joined: Wed Sep 21, 2016 1:55 pm

### Re: Numbering Priority

Functional groups should always be given priority with numbering, even if there is a lower numerical value that could be used instead.