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Description
Dimethyl Octadecanedioate is the dimethyl ester of octadecanedioic acid, a straight-chain dicarboxylic acid containing eighteen carbon atoms. As a non-heterocyclic building block, this compound provides a long aliphatic chain in which both terminal positions are already activated as esters, ready for transesterification, hydrolysis, reduction, aminolysis, or Dieckmann condensation. Its laboratory role covers two sides: it serves as a monomer or precursor in the synthesis of polymers and macrocycles, and it also acts as a long-chain reference compound in lipid analysis and gas chromatography work that requires a comparator of a defined chain length.
The property that makes this material a preferred choice is the combination of a long, hydrophobic hydrocarbon chain with two ester groups that react in a controlled manner. Methyl esters are far easier to handle and purify than long-chain dicarboxylic acids, which tend to be poorly soluble and to melt at high temperatures; reactions can therefore be run in ordinary organic solvents with better dissolution. The molecular symmetry of the compound simplifies the interpretation of NMR and mass spectrometry data, which makes reaction monitoring considerably more straightforward.
In Indonesian laboratories, this building block is typically used in university and institutional research groups working on organic synthesis, polymer chemistry, and lipid characterisation, as well as in industrial R&D laboratories that develop long-chain ester materials. It is also kept as a chain-length comparator in analytical laboratories running gas chromatography on fatty acid and diester samples, where a well-defined C18 diester reference supports method development and routine identification work.
Laboratory Applications
- Polymer and polyester synthesis — the two terminal ester groups allow step-growth polymerisation and chain extension, giving controlled access to long-chain polyester and polyamide backbones.
- Macrocycle preparation — the eighteen-carbon spacer supplies the chain length needed for ring-closing strategies such as Dieckmann condensation, where both activated ends must react intramolecularly.
- Gas chromatography reference work — as a defined long-chain diester, it functions as a comparator for retention behaviour when identifying or confirming similar species in complex sample mixtures.
- Lipid analysis support — the compound provides a structurally well-characterised long-chain standard for method development and confirmation in lipid and fatty acid characterisation workflows.
- General ester derivatisation studies — the reactive but controllable ester groups make it a convenient substrate for transesterification, hydrolysis, reduction, and aminolysis experiments on long-chain systems.
Specifications
- Brand: TCI
- CAS number: 1472-93-1
- Catalogue code: D3540
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Pack sizes: available in standard TCI research-scale packaging; please confirm the currently offered size when ordering
- Storage: keep in the tightly closed original container, in a cool, dry, well-ventilated place away from heat and moisture
Handling and Storage
Store the material in its tightly closed original container in a cool, dry, well-ventilated area, protected from direct sunlight, heat sources, and moisture, and keep it away from strong oxidising agents and strong bases that could attack the ester groups. Amber glass or the supplier's original packaging is suitable; transfer only with clean, dry glassware and spatulas to avoid contamination or hydrolysis. Handle in a fume hood or well-ventilated workspace, wearing safety glasses, chemically resistant gloves, and a laboratory coat. Avoid generating dust, avoid contact with skin and eyes, and wash hands thoroughly after handling. Always consult the manufacturer's Safety Data Sheet before use, and dispose of residues and contaminated materials in accordance with local chemical waste regulations.
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