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HONGKUN / PRODUCT DIRECTORY

2-Amino-3,5-dibromobenzaldehyde | CAS 50910-55-9

The 3,5-dibrominated aromatic fragment used in published ambroxol chemistry carries an aldehyde for side-chain construction and a separate ortho amino group; qualification centres on substitution pattern and intact aldehyde content.

CAS50910-55-9
Molecular formulaC7H5Br2NO
Molecular weight278.93 g/mol

Product overview

Two bromine atoms and an amino group define the aromatic portion of this ambroxol-related building block. The aldehyde provides the attachment point used in a published sequence with trans-4-aminocyclohexanol, while the ring amino group belongs to the retained aromatic fragment. CAS 50910-55-9 identifies the 2-amino-3,5-dibromo substitution pattern, not any dibrominated benzaldehyde. The molecule itself has no defined stereocentre; the trans designation in the downstream route concerns the cyclohexanol partner. For material qualification, confirm the substitution pattern independently of a single purity result and distinguish usable aldehyde content from chromatographic area percentage. Appearance should be interpreted alongside identity and related-substance results, particularly when comparing batches from different proposed manufacturers.

Chemical identity

Chemical name
2-Amino-3,5-dibromobenzaldehyde
CAS number
50910-55-9
Molecular formula
C7H5Br2NO
Molecular weight
278.93 g/mol

Application context

In published ambroxol hydrochloride routes, this aldehyde reacts with trans-4-aminocyclohexanol before reduction and salt formation. It contributes the amino-dibromobenzyl fragment, while the cyclohexanol partner supplies the trans relationship. For this conversion, specify the 2-amino-3,5-dibromo pattern and a quantitative aldehyde assay. The related-substances method should distinguish relevant benzyl alcohol, carboxylic acid and differently brominated compounds. Agree any colour criterion alongside assay and impurity results.

Chemistry and synthetic role

The formyl carbon becomes the benzylamine linkage in the ambroxol route. The adjacent aromatic amino group and the 3,5-bromine pattern are retained; the trans relationship comes from the cyclohexanol partner.

Quality review

Resolve bromination identity

Use structure-confirming evidence that can distinguish the 3,5-dibromo pattern from other substitution patterns; molecular mass alone is insufficient.

Measure aldehyde integrity

Agree an assay and related-substances method that can distinguish the target aldehyde from relevant alcohol or acid derivatives when the process risk assessment requires it.

Interpret colour with analytical data

Assess colour together with aldehyde assay and related substances. Agree the appearance criterion and handling precautions with the selected manufacturer.

Preparing a specification

State CAS 50910-55-9 and the 2-amino-3,5-dibromo structure. Specify the aldehyde assay basis, chromatographic method and route-relevant aromatic impurities. Include a colour requirement only if the receiving process needs one.

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 the proposed specification, batch COA and current SDS. Confirm availability of the analytical methods and batch evidence relevant to the intended process. Ask specifically for structure-confirming spectra and the method used to distinguish the aldehyde from relevant aromatic relatives.

Procurement questions

Does this precursor carry the trans configuration of ambroxol?

No. It has no defined stereocentre; the cited route introduces a trans-configured cyclohexanol partner.

Can a generic dibromobenzaldehyde name be used in the RFQ?

No. State the amino group and the 3,5-bromine positions together with the CAS.

Is a darker shade automatically unacceptable?

Not by itself. Compare the agreed appearance criterion with assay and related-substance results.

Technical sources
  1. PubChem CID 688305: identity properties and CAS synonymsNCBI / PubChem
  2. 2-Amino-3,5-dibromobenzaldehyde, D2625Tokyo Chemical Industry
  3. CN104447366A: Preparation method of 2-amino-3,5-dibromobenzaldehydeCNIPA via Google Patents