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HONGKUN / PRODUCT DIRECTORY

2-Bromo-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethan-1-one | CAS 62932-94-9

An unprotected phenolic alpha-bromoketone used in published albuterol precursor research, this material combines an amination handle with a retained hydroxymethyl group; reactive content and sample-solution handling are central qualification issues.

CAS62932-94-9
Molecular formulaC9H9BrO3
Molecular weight245.07 g/mol

Product overview

An alpha-bromoketone connects the aromatic fragment to an amine in research on albuterol, also known as salbutamol. In CAS 62932-94-9, bromine lies on the carbon next to the ketone; the ring carries a free phenolic hydroxyl and a hydroxymethyl group. Reaction with tert-butylamine introduces the nitrogen-containing side chain while retaining the ketone for a later reduction. These features make protection state and carbonyl identity important when matching material to the receiving step. Batch evaluation should address bromoketone content and separation from the corresponding unbrominated ketone. The analytical method should also define sample preparation and solution holding time so that results represent the material at the time of testing.

Chemical identity

Chemical name
2-Bromo-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethan-1-one
CAS number
62932-94-9
Molecular formula
C9H9BrO3
Molecular weight
245.07 g/mol

Application context

Albuterol, also called salbutamol, synthesis research uses this alpha-bromoketone for amination with tert-butylamine. The ketone remains at this stage, while the unprotected phenol and hydroxymethyl substituent form part of the retained aromatic fragment. The receiving specification should distinguish this input from protected acetophenones and the corresponding unbrominated ketone. Establish sample preparation, holding time and reinjection criteria for the assay because stability of the analytical solution requires attention.

Chemistry and synthetic role

The published amination replaces the alpha bromide while retaining the ketone at that stage. Reduction of the carbonyl belongs to later chemistry; this precursor itself is not the final beta-amino alcohol.

Quality review

Specify the unprotected structure

Confirm both phenolic OH and hydroxymethyl identity; protected analogues have different composition and process requirements.

Quantify the reactive bromoketone

Agree assay and chromatographic resolution from the unbrominated ketone and relevant reaction-derived species rather than relying on a generic aromatic purity figure.

Validate sample-solution timing

Establish preparation, maximum holding time and reinjection criteria through sample-solution stability checks for the selected analytical method.

Preparing a specification

Include the full CAS-linked structure, unprotected phenol/hydroxymethyl form, bromoketone assay and related-substance method. Define sample-solution handling and any water requirement with the receiving team.

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. Request the identity spectra and evidence supporting sample-solution suitability for the stated chromatographic method.

Procurement questions

Is the bromine located on the benzene ring?

No. It is on the carbon adjacent to the ketone, creating the amination handle.

Which synthesis stage uses this bromoketone?

Albuterol synthesis research uses it for amination with tert-butylamine, retaining the ketone for subsequent reduction.

How should analytical solution holding time be specified?

Use a holding time established by stability testing under the selected preparation and analysis conditions.

Technical sources
  1. PubChem CID 11334055: identity properties and CAS synonymsNCBI / PubChem
  2. 2-Bromo-1-[4-hydroxy-3-(hydroxymethyl)phenyl]ethan-1-oneChemScene via Sigma-Aldrich
  3. Advances in continuous manufacturing of albuterol sulfate: optimization of an amination reaction in flowRoyal Society of Chemistry, Reaction Chemistry & Engineering
  4. TRC B695744 certificate of analysis, lot 1-EDT-128-1LGC Standards / Toronto Research Chemicals