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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Doxazosin, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Doxazosin impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Doxazosin-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Doxazosin Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Doxazosin-d8 Stable Isotopes CS-O-02832 1126848-44-9 In Stock
Doxazosin-d8 Hydrochloride Stable Isotopes CS-O-10194 1219803-95-8 In Stock
(R)-Doxazosin-d8 Stable Isotopes CS-T-101447 Not Available Enquire
(S)-(+)-Doxazosin-d8 Stable Isotopes CS-T-101446 Not Available Enquire
Doxazosin 13C4 Stable Isotopes CS-EK-02567 74191-85-8 unlabeled Enquire
R-Doxazosin 13C4 Stable Isotopes CS-EK-02369 70918-17-1 unlabeled Enquire
R-Doxazosin D8 Stable Isotopes CS-O-13941 70918-17-1 (Unlabeled) Enquire
S-Doxazosin 13C4 Stable Isotopes CS-EK-00399 104874-86-4 unlabeled Enquire
S-Doxazosin D8 Stable Isotopes CS-O-13942 104874-86-4 (Unlabeled) Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Doxazosin API CS-O-04221 74191-85-8 In Stock
Doxazosin Mesylate API CS-O-01337 77883-43-3 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2,2'-(1,4-Piperazinediyl)bis[6,7-dimethoxy-4-quinazolinamine... Impurity CS-T-60613 102839-00-9 In Stock
Alfuzosin EP Impurity B Impurity CS-O-07134 23680-84-4 In Stock
Doxazosin desethylene impurity Impurity CS-O-45832 740066-32-4 Enquire
Doxazosin EP Impurity A Impurity CS-M-20066 3663-80-7 In Stock
Doxazosin EP Impurity B Impurity CS-T-91630 70918-74-0 In Stock
Doxazosin EP Impurity C Impurity CS-T-06701 617677-53-9 In Stock
Doxazosin EP Impurity D Impurity CS-T-20365 28888-44-0 In Stock
Doxazosin EP Impurity E Impurity CS-T-17525 27631-29-4 In Stock
Doxazosin Piperazine Impurity Impurity CS-O-45834 Not Available Enquire
DoxazosinAmino Methanol impurity Impurity CS-O-45833 Not Available Enquire
R-Doxazosin Impurity CS-O-05740 70918-17-1 In Stock
Terazosin EP Impurity C Impurity CS-T-40082 60547-97-9 In Stock
1-(2-cyano-4,5-dimethoxyphenyl)urea Impurity CS-O-41545 157459-53-5 Enquire
Doxazosin Acetylpiperazinyl impurity Impurity CS-O-51225 695217-74-4 Enquire
N-Descarbo(1,4-benzodioxine), N-Acetyl Doxazosin Hydrochlori... Impurity CS-T-73753 222832-30-6 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Amino-4,5-dimethoxybenzonitrile Fine Chemicals CS-M-03302 26961-27-3 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Doxazosin EP Impurity B Nitrosamine CS-O-51831 ---- In Stock


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Doxazosin mesylate Secondary Standards CS-SS-25989-500MG 77883-43-3 Enquire
Doxazosin Related Compound A Secondary Standards CS-SS-25992-50MG 70918-74-0 Enquire
Doxazosin Related Compound B Secondary Standards CS-SS-25990-50MG 28888-44-0 Enquire
Doxazosin Related Compound C Secondary Standards CS-SS-25987-50MG 23680-84-4 Enquire
Doxazosin Related Compound D Secondary Standards CS-SS-25991-50MG 3663-80-7 Enquire
Doxazosin Related Compound E Secondary Standards CS-SS-25988-50MG 27631-29-4 Enquire
Doxazosin Related Compound F Secondary Standards CS-SS-25681-40MG 617677-53-9 Enquire


Chiral

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
S-Doxazosin Chiral CS-O-07803 104874-86-4 In Stock