TCI H0566 Methyl Heptadecanoate is the methyl ester of heptadecanoic acid, an odd-chain fatty acid containing seventeen carbon atoms. It is widely recognised in laboratories as the most commonly used internal standard for the analysis of fatty acid methyl esters by gas chromatography. Its role is significant because odd-chain fatty acids are almost never present in meaningful quantities in ordinary vegetable oils and animal fats, so adding this compound to a sample will not overlap with the peaks of the natural components being measured.
The main property that makes this material the preferred choice is how closely its chromatographic behaviour resembles that of the other fatty acid methyl esters targeted by the analysis. It volatilises, separates, and is detected with a flame ionisation detector response equivalent to that of the true analytes, so quantitative correction becomes accurate without the need for complicated response factors. Its retention time falls between the dominant C16 and C18 esters, yet it remains well resolved on both polar and non-polar capillary columns. It is highly stable under normal storage conditions, and its non-polar character makes it easy to dissolve in heptane, hexane, or isooctane.
In Indonesia, this material is used in laboratories that carry out routine fatty acid profiling, where a reliable internal standard is required for every batch of samples analysed by gas chromatography. It is prepared as a stock solution in a non-polar solvent and added in a known amount before derivatisation or injection, allowing analysts to compensate for variations in sample preparation and injection volume across a working day.
- Fatty acid methyl ester profiling by gas chromatography, where it serves as the internal standard that corrects for injection and preparation variability across every sample in a batch.
- Quantification of fatty acid composition in vegetable oils, since odd-chain esters are practically absent from these matrices and will not overlap with the natural component peaks being measured.
- Analysis of animal fat samples, where the compound's seventeen-carbon chain provides a peak that is cleanly separated from the naturally dominant even-chain esters present.
- Method validation and system suitability checks on capillary gas chromatography columns, because its retention time falls predictably between the C16 and C18 esters on both polar and non-polar phases.
- Preparation of calibration and working standard solutions in heptane, hexane, or isooctane, supported by its non-polar character and its stability under normal laboratory storage conditions.
| Brand | TCI |
|---|---|
| CAS number | 1731-92-6 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Non-Heterocyclic Building Blocks |
| Pack sizes | available in the standard catalogue pack sizes offered by TCI for this item |
| Physical form | — |
| Storage | stable under normal laboratory storage conditions |
- Product code: H0566
Store the container tightly closed in a cool, dry place away from direct sunlight and sources of ignition, following the conditions stated on the manufacturer's label. Original glass containers or amber glass vials with solvent-resistant closures are suitable for both the neat material and prepared stock solutions, which should be clearly labelled with the preparation date. Handle in a well-ventilated area or fume hood, wear safety glasses, gloves, and a laboratory coat, and avoid contact with skin and eyes. Allow refrigerated material to reach room temperature before opening to prevent moisture condensation, and consult the manufacturer's safety data sheet before use.
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