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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

2,6-Dimethylaniline | CAS 87-62-7

The defined 2,6-xylidine isomer supplies a methyl-flanked aromatic amine for xylidide synthesis, including published lidocaine routes, with positional-isomer separation and amine assay central to raw-material selection.

CAS87-62-7
Molecular formulaC8H11N
Molecular weight121.18 g/mol

Product overview

Two methyl groups flank the amino group in 2,6-dimethylaniline. This arrangement distinguishes CAS 87-62-7 from the other xylidines and determines the aromatic fragment carried into an amide product. The free primary amine serves as the nitrogen component of acylation chemistry. Procurement should therefore specify the 2,6-isomer explicitly and request a method that separates other dimethylanilines, rather than relying on total amine content alone. Water and the quantitative assay basis are relevant when the receiving process uses an acylating reagent. Batch colour can be recorded as an additional acceptance characteristic, using agreed observation conditions rather than a general description of commercial quality.

Chemical identity

Chemical name
2,6-Dimethylaniline
CAS number
87-62-7
Molecular formula
C8H11N
Molecular weight
121.18 g/mol

Application context

Published lidocaine routes use 2,6-dimethylaniline to build the 2,6-dimethylphenyl amide fragment. The aromatic amine is acylated before the remaining side-chain functionality is completed. Related patent chemistry also uses 2,6-xylidine to form pipecolic-acid xylidides. These connections make the substitution pattern a practical raw-material requirement: another xylidine can introduce a different aromatic unit even when an overall amine assay looks comparable.

For route qualification, ask which positional isomers the analytical method resolves and how their limits relate to the downstream impurity strategy. Set water requirements against the receiving reaction and document the assay used for stoichiometric calculations. The proposed material should be evaluated within the buyer’s process, with any pharmaceutical-source documentation requested separately for that intended use.

Chemistry and synthetic role

The NH2 group is the site that forms the xylidide amide bond. The two neighbouring methyl groups remain part of the aromatic substituent introduced into the product.

Quality review

Resolve xylidine isomers

Require an identity method and chromatographic separation appropriate to the 2,6-isomer and relevant alternatives.

Measure reactive amine content

Specify quantitative assay and water independently for reaction-charge calculations.

Make colour comparable

If colour is a release criterion, state the test method and sample conditions.

Preparing a specification

Request 2,6-dimethylaniline free base, CAS 87-62-7, with isomer-specific purity, amine assay, water and any agreed colour criterion. Link impurity limits to the receiving amidation route.

Packaging and storage

Agree compatible packaging and secure closure for the proposed quantity. Confirm the actual material’s storage and shipment requirements from its current SDS.

Documentation

Request COA, SDS, identity and an isomer-resolving chromatogram. Confirm availability of water, quantitative-assay and route-relevant source information.

Procurement questions

Is unspecified xylidine acceptable?

Specify 2,6-xylidine; other positional isomers introduce different aromatic structures.

Does amine titration establish isomer purity?

It measures amine content but requires a separate selective method to assess positional isomers.

Why include water in an amidation enquiry?

Water is a separate component of the reaction charge and should be controlled according to the selected acylation process.

Technical sources
  1. PubChem CAS-resolved identity, CID 6896NCBI / National Library of Medicine
  2. 2,6-Dimethylaniline D146005Sigma-Aldrich
  3. Method for preparing lidocaine, CN102070483BGoogle Patents / patent publication
  4. L-N-n-propylpipecolic acid-2,6-xylidide, US4695576AGoogle Patents / patent publication