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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

Cyclopentyl chloroformate | CAS 50715-28-1

A cyclopentyloxycarbonyl donor for carbamate synthesis, allowing a five-membered carbocycle to be introduced through oxygen while retaining the carbonyl linkage characteristic of a chloroformate reagent.

CAS50715-28-1
Molecular formulaC6H9ClO2
Molecular weight148.59 g/mol

Product overview

Cyclopentyl chloroformate joins a cyclopentyl group to the reactive carbonyl through oxygen. It therefore provides a cyclopentyloxycarbonyl unit, rather than the cyclopentanecarbonyl unit obtained from a ring carboxylic-acid chloride. This structural distinction matters in the design of carbamate derivatives. The compound can be specified as neat material or a defined solution only after the proposed form has been confirmed. Qualification should address intact chloroformate content, residual cyclopentanol where relevant, and analytical preparation that does not inadvertently consume the reagent before measurement.

Chemical identity

Chemical name
Cyclopentyl chloroformate
CAS number
50715-28-1
Molecular formula
C6H9ClO2
Molecular weight
148.59 g/mol

Application context

Published non-peptide library synthesis uses cyclopentyl chloroformate to convert an aminoindole into its cyclopentyloxycarbonylamino derivative. It introduces a cyclopentyl carbamate as one member of a series of differently substituted carbamates. This research context makes ring size and the oxygen linkage important product distinctions. When evaluating the reagent for a similar route, buyers should verify whether the requested form is a solution or neat reagent, calculate the available chloroformate equivalents and review residual alcohol or related carbonate species against the planned conversion.

Chemistry and synthetic role

The connectivity is cyclopentyl–O–C(O)Cl. Reaction with an amine supplies the cyclopentyloxycarbonyl portion of a carbamate.

Quality review

Confirm ring-to-oxygen linkage

Verify cyclopentyl chloroformate rather than cyclopentanecarbonyl chloride.

Define the supplied concentration

Specify neat or solution form and solvent identity when applicable.

Review alcohol and carbonate impurities

Include residual cyclopentanol and relevant related species in the analytical discussion.

Preparing a specification

State cyclopentyloxycarbonyl identity, neat or solution form, solvent, active assay and relevant cyclopentanol/carbonate limits.

Packaging and storage

Packaging and net weight are agreed for the selected grade, order quantity and destination. Check the actual supplier SDS and label for storage and transport requirements.

Documentation

Request a batch COA, SDS and the analytical methods for the acceptance criteria below. Confirm which supporting chromatograms and identity data are available from the selected manufacturer.

Procurement questions

Are these two acylating materials interchangeable?

They create different bonds and supply different molecular fragments.

Can a solution assay be compared with neat-reagent purity?

Concentration and assay basis must first be aligned.

Why check cyclopentanol?

It lacks the chloroformate group and can affect the effective reagent balance.

Technical sources
  1. PubChem CID 2735892NCBI / PubChem
  2. Cyclopentyl chloroformate SDSApollo Scientific
  3. Process for parallel synthesis of a non-peptide libraryPatent publication