When it comes to naming organic compounds, a molecule with a single functional group is easy. Simply follow the puzzle piece approach to naming organic compounds.
What happens when you have more than one functional group present on the molecule?
That's where this Functional Group Priority cheat sheet (scroll down) comes in. Find the highest priority group and make that your ‘functional group'. The lower priority groups get ‘demoted' to a substituent with regards to naming rules.
See the individual naming tutorial videos for examples on how to name each functional group. Or start with this video on how to Memorize Orgo Functional Groups
Once you get the hang of it, try your skills with the Functional Groups Quiz!
What to Look For:
The higher the oxidation number of the group, the higher it tends to rank. In simple terms, a functional group with MORE bonds to oxygen will outrank one with fewer bonds.
For example: Carboxylic acid = 3 > ketone = 2 > alcohol = 1 > bromine = 0
Right-click the image below then select ‘save as’ or print for the full version
Fardin says
Very helpful
irfan khan says
welldone madam you did the great job making chemistry easir please if possible upload chemistry mcqs with answers and explanations thanks
Owez says
Thank you very much,,, thanks a lot,,,,,,, your youtube channel is helping me a lot,,,,,teachers in my school taught us in a different way, and I didn’t understand their way,,,,,,,, the the way you teach, makes everything clear and easy…… Thanks
Anthony Amoah says
When I click the Image , it appears blank. Please I really need the cheat .
The BAYBAYANON says
Thank u leah.. It is really helpful.
from Philippines with love!
LK says
Priority order is framed on what basis?
Jacob says
Where do epoxides fall in the priority list?
Sierra says
I can’t seem to get the image without the huge label on top of it. Anyway I can get the unblocked image?
Leah4sci says
Sierra: Click the image and the full cheat sheet will open
Denise says
I’m having trouble getting the image without the huge “Functional Group Cheat Sheet” label over it.. is there a link to just the document?
shailesh says
It’s rally help me
Leah4sci says
Wonderful!