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chemdata:msms12 [2014/04/07 12:27]
 chemdata:msms12 [2014/04/29 16:31] (current)
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 +==== NIST 12 MS/MS Database and Search Program ====
 +
 +
 +=== Library Search Software Features ===
 +
 +
 +<WRAP group> <WRAP 30% column> {{:chemdata:msms_cd.png?nolink&}}</WRAP>
 +
 +
 +<WRAP 60% column>
 +
 +
 +    * Search for the exact or isotopic precursor mass.
 +    * Search for exact fragment ion mass values in NIST EI and MS/MS databases.
 +    * Import spectra from instrument data system using standard formats including mzXML, mzData, mgf, msp, dta, pkl, JCAMP, etc.
 +    * Compatible with NIST Peptide MS/MS Databases.
 +    * Improved ability to identify compounds with few dominant peaks – a common situation for Tandem MS (New).
 +    * More robust scoring for spectra acquired on imperfectly-tuned instruments (New).
 +
 +
 +</WRAP> </WRAP>
 +
 +
 +=== Reference Tandem MS Spectra for Small Molecules ===
 +
 +
 +<WRAP group> <WRAP round box half column> **Compound Types:** 
 +
 +
 +    * Metabolites
 +    * Drugs
 +    * Phospholipids
 +    * Surfactants
 +    * Sugars
 +    * Peptides
 +    * …
 +
 +
 +</WRAP> <WRAP round box half column> **Precursor Types:** 
 +
 +
 +    * [M+H]<sup>+</sup>
 +    * [M+2H]<sup>2+</sup>
 +    * [M-H]<sup>-</sup>
 +    * [M+Na]<sup>+</sup>
 +    * [M+NH4]<sup>+</sup>
 +    * [Cat]<sup>+</sup>
 +    * [An]<sup>-</sup>
 +    * [p-H<sub>2</sub>O]
 +    * [p-NH<sub>3</sub>]
 +    * …
 +
 +
 +</WRAP> </WRAP>
 +
 +
 +<WRAP> **Precursor Ions vs. Release Date**{{:chemdata:precursor_ions_chart.png?nolink&}}</WRAP>
 +
 +
 +<WRAP group> <WRAP half column>
 +
 +
 +|Compounds |**6,999**  |
 +|Precursor Ions |**15,180**  |
 +|Spectra |**121,586**  |
 +|Positive Ion Spectra |**~90%**  |
 +|Negative Ion Spectra |**~10%**  |
 +
 +
 +</WRAP> <WRAP half column>
 +
 +
 +^Instrument Type ^Precursor Ions |
 +|Ion Trap |**12,047**  |
 +|Collision Cell (QTOF & QQQ) |**9,232**  |
 +
 +
 +</WRAP> </WRAP>
 +
 +
 +== Directly Accessible From: ==
 +
 +
 +    * MassLynx
 +    * Xcalibur
 +    * Mass Hunter
 +
 +
 +The NIST Tandem MS Database and Search Program is available from these **[[:chemdata:msms-distributors|distributors]]**
 +
 +
 +\\
  

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