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Description
TCI E0782 1-Ethylcyclopentanol with CAS number 1462-96-0 is a tertiary alcohol built on a five-membered ring, carrying both an ethyl group and a hydroxyl group on the same carbon atom. In organic synthesis laboratories, this material serves as a non-heterocyclic building block — a ready-made molecular framework that can be elaborated into more complex structures. The combination of a rigid cyclopentane ring and a reactive hydroxyl group makes this compound a practical starting point for researchers who want to construct alicyclic aliphatic skeletons without having to assemble the ring from scratch.
The characteristic that makes 1-Ethylcyclopentanol a frequent choice is its tertiary alcohol nature. Because the hydroxyl group is bound to a quaternary carbon, the compound is relatively resistant to oxidation into a ketone or an aldehyde, yet it readily undergoes acid-catalysed dehydration as well as substitution reactions proceeding through a tertiary carbocation. This pattern of reactivity is particularly useful for studying elimination and rearrangement mechanisms, where a substrate with predictable behaviour is needed to interpret the outcome of a transformation.
The compound is also the typical product of organometallic reagent addition to cyclopentanone, which is why it is often used as an authentic reference standard for comparison. In Indonesian laboratories, it fits naturally into university and institutional research settings where organic synthesis, reaction mechanism teaching, and method development are carried out, and where a well-defined tertiary alcohol from an established brand supports reproducible work across successive experiments.
Laboratory Applications
Non-heterocyclic building block synthesis — the preformed cyclopentane ring with a reactive hydroxyl handle lets chemists extend the framework toward more elaborate alicyclic targets without constructing the ring themselves.
Elimination mechanism studies — acid-catalysed dehydration of this tertiary alcohol proceeds cleanly enough to make it a dependable substrate for teaching and investigating E1 pathways and alkene product distributions.
Carbocation and rearrangement research — ionisation of the tertiary hydroxyl generates a stabilised tertiary carbocation, giving researchers a convenient entry point for examining skeletal rearrangement behaviour in ring systems.
Authentic reference material for organometallic additions — because it is the expected product of adding an organometallic reagent to cyclopentanone, it serves as a comparison standard when confirming reaction outcomes.
Substitution reaction development — the tertiary carbinol centre supports substitution chemistry through carbocation intermediates, making it suitable for exploring nucleophile scope and solvent effects in methodology work.
Specifications
Brand: TCI (Tokyo Chemical Industry)
Product code: E0782
CAS number: 1462-96-0
Chemical name: 1-Ethylcyclopentanol
Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes: available in standard TCI catalogue pack sizes; please confirm the currently available packaging when ordering
Storage: store according to the conditions stated on the manufacturer's label and Safety Data Sheet
Handling and Storage
Store the container tightly closed in a cool, dry, and well-ventilated area, away from direct sunlight, heat sources, and ignition sources. Keep the material separated from strong acids and strong oxidising agents, since tertiary alcohols are sensitive to acid-catalysed dehydration. Use the original manufacturer's container or a compatible tightly sealed glass bottle, and reseal promptly after each use to limit exposure to moisture and air. Handle the compound inside a fume hood while wearing safety goggles, chemical-resistant gloves, and a laboratory coat. Always consult the manufacturer's Safety Data Sheet before use, and follow institutional procedures for chemical waste disposal.
