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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

N-Methyl-3,3-diphenylpropan-1-amine | CAS 28075-29-8

A secondary amine fragment in published lercanidipine synthesis, combining an N-methyl group with a 3,3-diphenylpropyl chain and retaining an N–H bond for the documented side-chain assembly chemistry.

CAS28075-29-8
Molecular formulaC16H19N
Molecular weight225.33 g/mol

Product overview

The N-methyl substitution level is central to the identity of this lercanidipine-related fragment. CAS 28075-29-8 defines N-methyl-3,3-diphenylpropan-1-amine as a free secondary amine, distinct from its hydrochloride and from an N,N-dimethyl tertiary amine. The carbon bearing the two phenyl groups is not a stereocentre because those substituents are identical. Its procurement profile therefore centres on the amine's chemical identity and substitution state rather than an assumed enantiomeric specification. A published route connects this amine with lercanidipine assembly. When comparing offers, confirm the three-carbon chain, the 3,3-diphenyl arrangement and the free-base assay basis together; abbreviations such as 'diphenylamine side chain' can obscure materially different structures.

Chemical identity

Chemical name
N-Methyl-3,3-diphenylpropan-1-amine
CAS number
28075-29-8
Molecular formula
C16H19N
Molecular weight
225.33 g/mol

Application context

N-Methyl-3,3-diphenylpropan-1-amine supplies the amine-side-chain fragment in a published lercanidipine route. It reacts with a haloalkyl ester carrying the dihydropyridine portion. N-methyl and diphenylpropyl groups are already present, while the remaining N–H allows further substitution. For this assembly, confirm secondary-amine identity and free-base content, then define related-amine controls distinguishing relevant substitution states and chain structures.

Chemistry and synthetic role

This is an acyclic secondary amine with two identical phenyl substituents at C3. The free N–H and N-methyl group distinguish it from both the unsubstituted primary amine and the N,N-dimethyl analogue.

Quality review

Control N-substitution identity

Discuss methods distinguishing the target secondary amine from primary-amine and N,N-dimethyl-related material.

Distinguish base from hydrochloride

Confirm CAS and whether assay or charging is expressed as free amine or salt.

Verify the diphenylpropyl chain

Identity evidence should establish the three-carbon chain and 3,3-diphenyl connectivity rather than a different diphenylamine fragment.

Preparing a specification

State CAS 28075-29-8 and the free secondary-amine form. Specify assay basis, structural identification and agreed limits for relevant N-substitution and route-related impurities; a chiral criterion is not implied by this structure.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, quantity and destination. Agree storage and handling conditions using the actual supplied material’s SDS and label.

Documentation

Request COA, SDS and identity spectra. Confirm the assay calculation and availability of analytical information distinguishing the intended N-methyl compound from relevant amine analogues.

Procurement questions

Does the diphenyl-bearing carbon need an R/S specification?

No. Its two phenyl groups are identical, so it is not a stereocentre.

Is the hydrochloride the same procurement identity?

No. The free base and its hydrochloride require separate chemical-form definitions.

Why distinguish N-methyl from N,N-dimethyl material?

They have different amine substitution states; the target retains the N–H used in the documented assembly.

Technical sources
  1. PubChem CID 119812: properties and CAS synonymsNCBI / NLM / NIH
  2. N-Methyl-3,3-diphenylpropan-1-amineAmbeed, hosted by Sigma-Aldrich
  3. WO2006059332A1 — Intermediates for preparation of lercanidipineWIPO patent publication / Google Patents
  4. Substance Information: N-methyl-3,3-diphenylpropylamineEuropean Chemicals Agency