The NIST Mass Spectral Library is the world’s most widely used and trusted resource for identifying mass spectra.  The NIST 26 EI Library has 431K spectra for 382,180 compounds and over 527K literature and experimentally determined GC Methods and Retention Indexes for 216K compounds. NIST now records the RI values of all measured spectra, including the … Continue reading NIST Mass Spectral Library