TCI M0954 4-Methyl-4-heptanol is an aliphatic tertiary alcohol in which the hydroxyl group is attached to a quaternary carbon atom positioned in the middle of a methyl-branched heptane chain. As a non-heterocyclic building block, this compound offers a clean hydrocarbon framework carrying a single reactive functional group, which makes it well suited to researchers who need to introduce a branched alkyl fragment into a target molecule. In the laboratory, tertiary alcohols of this kind are also frequently employed as model substrates in reaction mechanism experiments, particularly for studying substitution and elimination behaviour at a sterically hindered carbon centre.
The principal characteristic behind its selection is the steric hindrance surrounding the hydroxyl group. Because the hydroxyl sits on a tertiary carbon, further oxidation to an aldehyde or a carboxylic acid is difficult, while dehydration to an alkene or ionisation to a relatively stable tertiary carbocation proceeds readily. The symmetrical structure of the compound also simplifies the interpretation of NMR spectra, which makes it convenient as a teaching material as well as a comparison standard. Being a liquid at room temperature, it is straightforward to measure volumetrically and to transfer with an ordinary pipette or syringe.
In Indonesian laboratories, this building block is typically handled within university organic synthesis groups, institutional research centres, and industrial R&D units that develop intermediates. It is generally prepared as a reagent for small-scale reactions, as a reference substance when comparing the reactivity of primary, secondary, and tertiary alcohols, and as a starting material for practical classes that demonstrate carbocation chemistry. Its liquid form makes it easy to dispense from a standard reagent bottle into a reaction vessel without specialised equipment.
- Branched alkyl fragment introduction in synthesis, where the compound supplies a ready-made quaternary carbon centre that would otherwise require several additional steps to construct.
- Mechanistic studies of substitution and elimination reactions, since the hindered tertiary centre clearly distinguishes pathways that proceed through carbocation intermediates from those requiring direct backside attack.
- Dehydration experiments to form alkenes, in which the tertiary hydroxyl is eliminated readily and allows the resulting alkene distribution to be examined under controlled conditions.
- Carbocation stability investigations, because ionisation of the tertiary alcohol generates a relatively stable tertiary carbocation useful for probing rearrangement and trapping behaviour.
- NMR teaching and reference work, where the symmetrical structure yields a simplified spectrum that helps students correlate signal patterns with molecular structure and serves as a comparison sample.
| Brand | TCI |
|---|---|
| CAS number | 598-01-6 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Non-Heterocyclic Building Blocks |
| Pack sizes | available in the catalogue pack sizes offered by TCI for this item |
| Physical form | liquid at room temperature |
| Storage | store in a tightly closed container in a cool, dry, well-ventilated area |
Keep the container tightly closed and store it in a cool, dry, well-ventilated place away from heat sources, open flames, and direct sunlight. Original manufacturer bottles or compatible glass reagent bottles with secure closures are appropriate for storage, and containers should be clearly labelled with the substance name and CAS number. Handle the material inside a fume hood, wear safety glasses, a laboratory coat, and chemically resistant gloves, and avoid inhaling vapours or allowing prolonged skin contact. Transfer the liquid using a clean pipette or syringe to prevent contamination, close the bottle immediately after use, and consult the manufacturer's safety data sheet before working with this compound.
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