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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2-Chlorobenzylamine | CAS 89-97-4

An ortho-chlorinated benzylamine building block for nitrogen-containing synthesis, including published thienopyridine chemistry, with a primary aminomethyl group that introduces the complete 2-chlorobenzyl fragment into downstream structures.

CAS89-97-4
Molecular formulaC7H8ClN
Molecular weight141.60 g/mol

Product overview

The chlorine atom in 2-chlorobenzylamine sits on the aromatic ring next to the aminomethyl substituent. Its primary amine is separated from that ring by a methylene group, a distinction that matters when selecting between benzylamines and anilines. CAS 89-97-4 identifies the free base, rather than its hydrochloride salt. Published preparation literature describes its relevance to thienopyridine synthesis, including ticlopidine chemistry. Qualification should establish the ortho substitution pattern, the chemical form and the profile of other amines. An amine titration can support assay, but does not by itself distinguish the target from other basic organic components.

Chemical identity

Chemical name
2-Chlorobenzylamine
CAS number
89-97-4
Molecular formula
C7H8ClN
Molecular weight
141.60 g/mol

Application context

2-Chlorobenzylamine provides a ready-made ortho-chlorobenzyl substituent for nitrogen-centred transformations. Patent literature on its preparation identifies thienopyridine derivatives, including ticlopidine, as downstream chemistry. The useful feature is the combination of a reactive primary amine and a retained chlorinated aromatic fragment: the nitrogen can become part of a more complex structure while the benzyl group supplies its aromatic substituent. For route transfer or raw-material substitution, confirm that the procedure calls for the free base. A hydrochloride introduces both a different formula basis and a neutralisation requirement, so it should be evaluated as a separate material.

Chemistry and synthetic role

An aromatic C–Cl bond and a benzylic CH2NH2 group occupy adjacent positions. The amine nitrogen is the principal site for amide formation and other nitrogen-functionalisation reactions.

Quality review

Check the ortho isomer

Use structural identification and a chromatographic method capable of distinguishing positional chlorobenzylamine isomers.

Specify the free base

State CAS 89-97-4 and the free-base form; check whether assay is reported on an as-received or corrected basis.

Resolve other basic components

Agree chromatographic limits for relevant amine impurities and a water test if the next transformation is moisture-sensitive.

Preparing a specification

Specify the free base, identity method, chromatographic purity and relevant chlorobenzylamine-isomer limits. Define assay basis and water acceptance against the intended transformation.

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

Is this the same as 2-chloroaniline?

No. A methylene group separates the amine from the aromatic ring in 2-chlorobenzylamine.

Can the hydrochloride be substituted directly?

Confirm the route first: a salt changes the formula basis and may require neutralisation.

Does amine titration establish organic purity?

It measures basic content; chromatography is needed to distinguish individual organic components.

Technical sources
  1. PubChem CID 66648NCBI / PubChem
  2. 2-ChlorobenzylamineSigma-Aldrich
  3. Method for preparing 2-chlorobenzylamineEuropean patent EP0367232A2