Trimethylsilylpropanoic acid
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Preferred IUPAC name 3-(Trimethylsilyl)propanoic acid | |
Other names 3-Trimethylsilylpropanoate; 3-(Trimethylsilyl)propionic acid; 2,2-Dimethyl-2-silapentan-5-oic acid | |
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ECHA InfoCard | 100.024.678 |
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Properties | |
Chemical formula | C6H14O2Si (acid), C6H13O2Si− (anion) |
Molar mass | 146.26 g/mol (acid), 145.25 g/mol (anion), 172.27 g/mol (sodium salt of deuterated molecule) |
Appearance | Colorless liquid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references |
Chemical compound
Trimethylsilylpropanoic acid (TMSP or TSP) is a chemical compound containing a trimethylsilyl group. It is used as internal reference in nuclear magnetic resonance for aqueous solvents (e.g. D2O). For that use it is often deuterated (3-(trimethylsilyl)-2,2,3,3-tetradeuteropropionic acid or TMSP-d4).[1] Other internal references that are frequently used in NMR experiments are DSS and tetramethylsilane.
References
- ^ Pohl, L.; Eckle, M. (1969). "Sodium 3-(trimethylsilyl)tetradeuteriopropionate, a new water-soluble standard for 1H NMR". Angewandte Chemie International Edition in English. 8 (5): 381. doi:10.1002/anie.196903811.
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