Known material?
Use Find Spectrum to jump straight to reference records when you already know what you are looking for.
Reference library
Find the reference spectrum you need
Search FTIR.fun reference records directly by spectrum number, IUPAC name, CAS number or product name — no unknown-spectrum upload required.
FTIR.fun Reference SearchDirect library lookup
CAS: 64-17-5IUPAC / common nameSpectrum numberProduct name
Unknown sample?
Upload the measured spectrum to search the library and continue into full analysis.
Search & analyzeOnly have an image?
Recover numerical data first with Image → CSV, then use the extracted spectrum in FTIR.fun.
Open Image → CSV