is there any reference where I can get UV spectra for the various molecule?

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Teodoro S Kaufman

Try sbds

Serdar Badoğlu

SDBS is a nice source, check it out at

http://sdbs.riodb.aist.go.jp/sdbs/cgi-bin/direct_frame_top.cgi

Harry ten Brink

Theodore / Serdar

I did not find UV-spectra in SDBS?!

Furthermore it provides an IR-spectrum of my favorite molecule, glyoxal, as a water solution; but then glyoxal is present in the trimere-form, not the pure monomere