Impurity reference standards
Doxazosin impurity standards
For Doxazosin, the Zemixal catalogue holds 14 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 6 pharmacopoeial impurities.
14reference materials
6pharmacopoeial
Each lot ships with a certificate of analysis, and characterisation data such as 1H-NMR, mass spectrum and HPLC purity can be shared before you order. They are bought for system suitability, peak identification, quantitation against limits and the impurity justification sections of regulatory submissions.
By impurity type
Pharmacopoeial6EP, USP, BP or JP named impurities
Counts are based on product names. One compound can fall into more than one type.
All Doxazosin reference materials
1–14 of 14 standards
4-Amino-6,7-dimethoxyquinazolin-2(1H)-one Hydrochloride
- CAS
- 134749-43-2
- Formula
- C10H12ClN3O3
- MW
- 257.67 g/mol
ZX-029090
Questions
Doxazosin impurities, answered
What Doxazosin reference materials are available?
The catalogue currently lists 14 compounds for Doxazosin, including 6 pharmacopoeial impurities. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Doxazosin impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Doxazosin impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.