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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

N-(4-Aminophenyl)-N-methyl-2-(4-methylpiperazin-1-yl)acetamide | CAS 262368-30-9

A preassembled nintedanib amine fragment that combines a free para-aniline with an N-methylacetamide and substituted piperazine, requiring clear free-base identity and control of route-related aromatic precursors.

CAS262368-30-9
Molecular formulaC14H22N4O
Molecular weight262.35 g/mol

Product overview

This intermediate combines a free para-aniline, a tertiary N-methylacetamide and a substituted piperazine in a preassembled nintedanib fragment. The aromatic NH2 provides the connection used in later assembly, while the methylated amide and piperazine side chain are already installed. CAS 262368-30-9 identifies the free base. Qualification should confirm the amino structure and distinguish the nitro precursor and relevant aromatic related substances in the selected preparation. If catalytic reduction is used, assess catalyst-derived residues for their relevance to the receiving process. The assay should state whether content is calculated as free base and how water, residual solvents or any acid component affect the quantity charged.

Chemical identity

Chemical name
N-(4-aminophenyl)-N-methyl-2-(4-methylpiperazin-1-yl)acetamide
CAS number
262368-30-9
Molecular formula
C14H22N4O
Molecular weight
262.35 g/mol

Application context

Nintedanib synthesis uses this aniline fragment in assembly with an oxindole-derived partner. The N-methylacetamide and substituted piperazine side chain are already installed, leaving the para amino group for the next connection. Routes through an aromatic nitro precursor make amino/nitro discrimination a useful quality focus. Specify free-base content and the water/solvent basis; where catalytic reduction is used, review the residues relevant to the receiving process.

Chemistry and synthetic role

The aromatic NH2 is chemically distinct from the substituted piperazine nitrogens and the N-methylamide. Their coexistence makes the exact substitution pattern and protonation state important. The compound is not a generic methylpiperazine reagent.

Quality review

Verify the free para-aniline

Identity and related-substances testing should distinguish amino material from the nitro precursor mentioned in published routes and from other aromatic substitution patterns.

Confirm free-base accounting

Ask whether the batch contains a counterion or is reported as free base. Salt content, water and solvents can change mass-based charging calculations.

Target reduction residues

Where catalytic reduction is used, discuss catalyst-derived residues and precursor carry-over with the proposed source. Set controls from the actual process and downstream needs.

Preparing a specification

Request the free base with an agreed quantitative assay, aromatic related-substances method and water/solvent basis. Identify the critical precursor peaks and any route-relevant metal limits before comparing grades.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request identity spectra, a chromatogram with precursor assignments and clarification of assay calculation. Confirm whether batch COA, SDS and reduction-related residue data are available for the selected manufacturer.

Procurement questions

Is this nintedanib itself?

No. It is an amine-containing intermediate used in published nintedanib assembly routes.

Why specify the free base?

A salt adds a counterion and changes the relationship between weighed material and amine content.

Which nitrogen is used for later assembly?

The free para-aniline group is the connection described in the referenced nintedanib chemistry.

Technical sources
  1. N-(4-Aminophenyl)-N-methyl-2-(4-methylpiperazin-1-yl)acetamideFDA GSRS
  2. Nintedanib amine intermediate SYV00006Sigma-Aldrich
  3. Preparation of nintedanib intermediateCN108610308A / Google Patents
  4. Preparation method of nintedanibUS20170174625A1 / Google Patents