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

Zonisamide Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-(Methyl-d3) Zonisamide Stable Isotopes CS-T-81430 1346601-84-0 Enquire
Zonisamide 13C2 15N Stable Isotopes CS-T-62853 1188265-58-8 Enquire
Zonisamide 13C6 Stable Isotopes CS-BX-00633 68291-97-4 (Unlabeled) Enquire
Zonisamide 15N D4 Stable Isotopes CS-O-46635 2308764-57-8 Enquire
Zonisamide-d4 Stable Isotopes CS-O-02921 1020720-04-0 In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Zonisamide API Standards CS-O-11773 68291-97-4 In Stock
Zonisamide sodium API Standards CS-BX-00210 68291-98-5 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Methyl zonisamide Metabolites CS-O-05940 68292-02-4 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Acetyl Zonisamide Impurities CS-T-01238 68936-43-6 Enquire
Zonisamide N,N-Dimethylformimidamide Impurities CS-T-62700 1217201-89-2 In Stock
Zonisamide-N-(6-hexanoic Acid) Impurities CS-T-62854 1076199-51-3 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,2-Benzisoxazole-3-methanesulfonic acid sodium salt Intermediates CS-O-30841 73101-64-1 In Stock


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Zonisamide Glucuronide Glucuronides CS-O-48100 Not Available Enquire