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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Astemizole, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Astemizole 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 Astemizole-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.

Astemizole Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
O-Desmethyl Astemizole-d4 Stable Isotopes CS-O-43403 73736-50-2(Unlabelled) Enquire
O-Desmethyl Astemizole-d5 Stable Isotopes CS-T-95818 73736-50-2(Unlabelled) Enquire
Astemizole D3 Stable Isotopes CS-T-48388 1189961-39-4 Enquire
Astemizole-d5 Stable Isotopes CS-T-100823 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Astemizole API CS-O-11602 68844-77-9 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
O-Desmethyl Astemizole Impurity CS-T-16153 73736-50-2 Enquire
N-Ethoxycarbonyl Norastemizole Impurity CS-T-22310 84501-68-8 Enquire
Norastemizole Hydrobromide Impurity CS-T-37450 75970-64-8 Enquire