I had to identify an unknown in the lab and it was a UV active acid with a melting point of 133C-135C. Sodium fusion test revealed no heteroatoms so the only compound that fits the criteria is cinnamic acid but although the IR matches that of cinnamic acid, the NMR doesn't. Also cinnamic acid is white, this stuff was orangy brown. I never took an actual NMR though, thats just the NMR they gave us to go with the compound so maybe they made a mistake. Any idea what compound this NMR is for? There are 2 singlets so already it can't be cinnamic acid can it?