Doxazosin Related Compounds & Impurities

Doxazosin is a selective alpha-1 adrenergic receptor antagonist used for hypertension and benign prostatic hyperplasia.

Simson Pharma Limited along with its subsidiary offices Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) is a trusted manufacturer and supplier of high-quality pharmaceutical reference standards, offering a comprehensive portfolio of Doxazosin reference standards, pharmacopeial and non-pharmacopeial Doxazosin impurities, related compounds, related substances, metabolites, stable isotope-labelled compounds, deuterium labelled compounds and nitrosamine (N-NO) reference standards.

These materials support pharmaceutical research and development, product development, ANDA and DMF submissions, quality control (QC), analytical method development and validation, stability studies, impurity identification, and genotoxic impurity assessment.

Our Doxazosin-related reference standards are thoroughly characterized using advanced analytical techniques and are supplied with comprehensive Certificates of Analysis (COA) and supporting analytical data from our USFDA certified, ISO 17025 and ISO 17034 accredited Lab, to meet global regulatory expectations. EP and USP traceable reference standards can also be provided upon request, subject to availability. Simson is also a provider of EP and USP traceable standards. To ensure consistent quality and reliability, our reference standards are periodically re-tested according to established quality management procedures.

Pharmaceutical Reference Standards / Impurity Standards

Doxazosin EP Impurity H
Doxazosin EP Impurity E
Doxazosin Mesilate Impurity G
4-amino-6,7-dimethoxyquinazolin-2(1H)-one
7-Hydroxy Doxazosin
Methyl 1,4-Benzodioxan-2-carboxylate
1-(1,4-Benzodioxan-2-ylcarbonyl)piperazine
(4-amino-6,7-dimethoxyquinazolin-2(1H)-onecompoundwith4-amino-6,7-dimethoxyquinazolin-2-ol)hydrochloride
Doxazosin Related Compound G (Tautomer Form)
4-Amino-6,7-dimethoxy-1,2-dihydroquinazolin-2-one Hydrochloride
Doxazosin Related Compound G
Doxazosin EP Impurity F Mesylate Salt
Doxazosin Impurity 5
6,7-dimethoxy-2-(piperazin-1-yl)quinazolin-4-Amine Dimethanesulfonate
N-Nitroso Doxazosin EP Impurity B
Doxazosin Impurity 1
Doxazosin Impurity 2
Doxazosin Impurity 6
Doxazosin Impurity 7
Doxazosin Impurity 8

Metabolites

6`-Hydroxy Doxazosin
6-Hydroxydoxazosin

Isotope Labelled Compounds

Doxazosin-d8
Doxazosin-D8 Hydrochloride