Abstract
Gas chromatographic (GC) retention data as methylene unit (MU) values are presented for the trimethylsilyl (TMS) derivatives of 250 biochemically significant compounds on two different GC stationary phases (OV-1 and OV-17). A ΔMU value is calculated for the difference in MU values on the moderately polar OV-17 and the nonpolar OV-1 columns. Some relationships between ΔMU values and structure are discussed; in general highly polar compounds have large ΔMU values and those compounds forming derivatives containing several TMS groups have low ΔMU values. Compounds in the following categories were studied: amino acids; organic acids; aromatic acids, amines, and glycine conjugates; and purines, pyrimidines, and other nitrogen heterocyclic compounds.
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