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| Product | Description | |
|---|---|---|
| Doxazosin EP Impurity B monohydrochloride | Doxazosin impurity. Synonyms: 1-[(2,3-Dihydro-1,4-benzodioxin-2-yl)carbonyl]piperazine Monohydrochloride. Grade: > 95%. CAS No. 70918-74-0. Molecular formula: C13H17ClN2O3. Mole weight: 284.74. |  |
| Doxazosin EP Impurity H | Doxazosin EP Impurity H. Uses: For analytical and research use. Group: Impurity standards. Alternative Names: 2,2'-(piperazine-1,4-diyl)bis(6,7-dimethoxyquinazolin-4-amine). CAS No. 102839-00-9. Molecular formula: C24H28N8O4. Mole weight: 492.53. Catalog: APB102839009. |  |
| 1-[(2,3-Dihydro-1,4-benzodioxin-2-yl)carbonyl]piperazine Monohydrochloride | 1-[(2,3-Dihydro-1,4-benzodioxin-2-yl)carbonyl]piperazine Monohydrochloride (Doxazosin EP Impurity B) is an impurity of Doxazosin (D537500), a selective α1-adrenoceptor antagonist. Doxazosin relaxes smooth muscles of the prostate. Group: Biochemicals. Grades: Highly Purified. CAS No. 70918-74-0. Pack Sizes: 1g, 2g. Molecular Formula: C13H17ClN2O3. US Biological Life Sciences. |  Worldwide |
| 4-Amino-2-chloro-6,7-dimethoxyquinazoline | 4-Amino-2-chloro-6,7-dimethoxyquinazoline is an intermediate in the production of Terazosin and Doxazosin. Terazosin is a selective alpha1-antagonist used for the treatment of symptoms of benign prostatic hyperplasia (BPH). Doxazosin is a quinazoline-derivative and long-lasting α1 adrenergic receptor blocker. Synonyms: 4-Quinazolinamine, 2-chloro-6,7-dimethoxy-; 2-Chloro-6,7-dimethoxy-4-quinazolinamine; Quinazoline, 4-amino-2-chloro-6,7-dimethoxy-; 2-Chloro-4-amino-6,7-dimethoxyquinazoline; 2-Chloro-6,7-dimethoxy-quinazolin-4-ylamine; USP Doxazosin Related Compound C; Terazosin EP Impurity A; Alfuzosin EP Impurity B; Prazosin Impurity; Doxazosin EP Impurity F. Grade: 95%. CAS No. 23680-84-4. Molecular formula: C10H10ClN3O2. Mole weight: 239.66. | |
| 6,7-Dimethoxy-2,4-quinazolinedione | 6,7-Dimethoxy-2,4-quinazolinedione is an intermediate in the preparation of Doxazosin, which is a quinazoline-derivative and long-lasting α1 adrenergic receptor blocker used to treat benign prostatic hyperplasia and lower urinary tract symptoms. Synonyms: 2,4(1H,3H)-Quinazolinedione, 6,7-dimethoxy-; 6,7-Dimethoxy-2,4(1H,3H)-quinazolinedione; 2,5-Dihydroxy-6,7-dimethoxyquinazoline; 6,7-Dimethoxyquinazolin-2,4(1H,3H)-dione; 6,7-Dimethoxyquinazoline-2,4-diol; 6,7-Dimethoxyquinazoline-2,4-dione; Doxazosin EP Impurity D. Grade: ≥95%. CAS No. 28888-44-0. Molecular formula: C10H10N2O4. Mole weight: 222.20. | |
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