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

Quinidine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3R)-Hydroxyquinidine-vinyl-d3 Stable Isotopes CS-T-97411 1267650-60-1 Enquire
(3S)-3-Hydroxy Quinidine-vinyl-d3 Stable Isotopes CS-T-101263 Not Available Enquire
N-Methyl Quinidine-d3 iodide Stable Isotopes CS-O-54700 42982-87-6 (Unlabelled) Enquire
Quinidine-13C,d2 Hydrochloride Stable Isotopes CS-O-06906 56-54-2(Unlabeled) In Stock
Quinidine-d3 1’-Oxide Stable Isotopes CS-T-102093 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Hydroquinidine API CS-DA-00142 1435-55-8 In Stock
Quinidine Hydrochloride API CS-O-51899 6151-40-2 Enquire
Quinidine Sulfate Dihydrate API CS-T-61020 6591-63-5 In Stock
Quinidine sulphate API CS-O-02210 50-54-4 In Stock
Quinidine Gluconate API CS-T-61019 7054-25-3 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
O-Desmethyl Quinidine Metabolite CS-T-52259 70877-75-7 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Dihydrocinchonine Sulphate Impurity CS-EO-03806 70134-33-7 Enquire
Quinidine EP Impurity B sulfate salt Impurity CS-EO-03805 118-10-5 (Freebase) Enquire
Quinidine Methiodide Impurity CS-T-61018 42982-87-6 Enquire
Quinidine N-Oxide Impurity CS-T-61017 70116-00-6 In Stock
Quinidine Sulfate Impurity CS-T-85145 747-45-5 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
10,11-Dihydroquinidine Fine Chemicals CS-O-58891 1076202-13-5 Enquire
Quininone Fine Chemicals CS-T-61025 84-31-1 In Stock
Dihydroquinidine sulfate Fine Chemicals CS-ED-02268 Not Available Enquire