|
New NIST GC Retention Index (RI) Database Enables Gas Chromatographers to Quickly and Easily Search and Compare Compounds
Just released, NIST GC Retention Index (GC-RI) Database is a new library and search program for GC Method Development that will be an essential tool for anyone performing gas chromatography (GC, GC/MS, GC/FTIR). The new program's gas phase Retention Index (RI) database contains the Kovats Indices (KI) for more than 293,000 citations (GC conditions, literature citations with titles, and RI values) for over 44,000 compounds on both non-polar and polar columns.
Vendor-Independent Tool Expedites Method Development
You can not only search for RI data by compound name, partial name, formula, nominal molecular weight, CAS number, or structure, but also narrow your search by column type, stationary phase type, or temperature conditions. You can even constrain your search by "RI value range".
Identify Unknowns. . Have you ever generated a chromatogram where an unknown peak mysteriously appears between two peaks of known identity? NIST RI Search'ssearch by RI value range feature can save hours of stress, fatigue, and frustration. Simply search the NIST RI database for compounds that have a retention index in the range that corresponds to the unknown compound. Your list of candidates is narrowed significantly, or at least, you have proof of your "hunch"!
Save Time. Learn whether compounds may be separated on a particular GC column, without resorting to ordering standards or performing time-demanding gas chromatography.
Rapid Column Determination. Quickly determine the recommended column type, without any "vendor bias". Vendor-independent column information includes packed or capillary, polarity, and in many cases the carrier gas used, phase type and thickness, and column length
Trustworthy Data. Data is accurate and defendable. All retention indices are cited from literature, and complete bibliographical references are included
Easy Comparison. RI data from different sources has variances. NIST has carefully developed an estimated non-polar retention index (n-alkane scale), complete with confidence intervals
Comprehensive. Each compound is also indexed by its synonym. Did you know that GuaifenesinŽ has 127 synonyms, including the brand name Robitussin, where it is an active ingredient? NIST RI Search enables you to quickly zero in on the right compound.
Search Specific-Parameters. Narrow Your Search with parameters that include compound name or a fragment thereof, nominal molecular weight, structure, structure similarity, CAS number, column type (polar or non-polar) temperature conditions (ramp or isothermal) or even choice of resolution type (Kovats or Lee).
Comprehensive Method Development Search Capability
The NIST GC-RI Database and its accompanying search program provide retention index data and gas chromatographic conditions for 44,008 compounds on polar and non-polar stationary phase used with packed and open tubular columns. The 293,247 citations (index values and GC methods) contain the complete bibliographical information and title of the original source research paper. Details of the gas chromatographic method used to obtain the retention index are also provided.
Many of the compounds are indexed by multiple names (Synonyms). All the compounds are indexed by elemental composition (Formula), nominal mass (MW), Chemical Abstracts Services registry number (CAS#), and a sequence number pertaining to their position in the NIST GC-RI Database (ID#). Estimated non-polar retention index (n-alkane series) values, based on structure, are also provided for each compound.
Comprehensive Method Development Search Capability
Data can be retrieved through an incremental name search, a CAS# search, a MW search, a formula search, or a structure search. In addition, the Database can be searched by multiple variables that can be used to constrain the above-mentioned searches. Searches can be:.
- performed over a molecular weight (nominal mass) range
- constrained to the elements present and/or the number of each element present
- constrained for name fragments present in the main database name and in the synonym list
- constrained by RI value range
Search results for individual hits can be constrained according to column type (packed or capillary), stationary-phase type (polar or non-polar), GC temperature conditions (isothermal or temperature programmed), and/or retention index type (Lee or Kovats).
Cost-Effective Solution
| P/N A14307 |
NIST RI Index for GC |
$ 499.00 |
|
Return to MS, GC and Biochemistry
|
