Originally Posted by
Sci_Girl
ehhh...I suck at o-chem but I will take a wing at matching the IR to the compound. I am thinking that it is Aspirin, acetylsalicylic acid, based mainly on the obvious -OH group from the broad and wide distribution at ~3200-2400, then the strong double peak at ~1750 is the C=0 bonds, and the alkene at the ~1650 peak. The others just do not seem to fit based on the shallow depth of that initial -OH reading on your given IR. I do not see a NH bond anywhere in that so Acetaminophen is out, caffeic acid has a very broad -OH and that is not present in your IR, Ibuprofen does not have the ester group. I could be wrong lol, I am basing this off of my work 2 years ago in organic chem but I gave it a shot and maybe it could help you out.