Zonisamide
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Zonisamide, Chemically it is a sulfonamide. It serves as an anticonvulsant used primarily as an adjunctive therapy in adults with Parkinson's disease, partial-onset seizures; infantile spasm, mixed seizure types of Lennox–Gastaut syndrome, myoclonic and generalized tonic clonic seizure.[4] Despite this it is also sometimes used as a monotherapy for partial-onset seizures.(ref: Wikipedia). Zonisamide API Reference standards and its EP Impurities, USP Impurities, non pharmacopeial Impurities, listed below & also offered custom synthesis for unknown Impurities. If require any contact info@drjcrbio.com, sales@drjcrbio.com
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Product Name : Zonisamide Sulfonic Acid Impurity; 1,2-Benzisoxazole-3-methanesulfonic acid
Code: JCZNS-07 CAS: 73101-64-1 Chemical Formula: C8H7NO4S Molecular Weight: 213.21 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Chemical and Pharmaceutical Bulletin, 1982, vol. 30, # 1, p. 333 - 335; Application: Zonisamide Sulfonic Acid Impurity; 1,2-Benzisoxazole-3-methanesulfonic acid is useful as reference Impurity standard. 
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Product Name : Zonisamide N-Methyl Impurity; 1-Benzisoxazol-3-yl-N-methylmethanesulfonamide
Code: JCZNS-06 CAS: 68292-02-04 Chemical Formula: C9H10N2O3S Molecular Weight: 226.25 Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature: Chemical and Pharmaceutical Bulletin, 1982, vol. 30, # 1, p. 333 - 335; Application: Zonisamide N-Methyl Impurity; 1-Benzisoxazol-3-yl-N-methylmethanesulfonamide is useful as reference Impurity standard. 
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Product Name : Zonisamide Related Compound C; N’-(Benzisoxazol-3-ylmethylsulfonyl)-N,N-dimethylformimidamide
Product Code : JCZNS-05 CAS : 1217201-89-2 Formula : C11H13N3O3S MWt : 267.3 Category : Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature : [European Journal of Medicinal Chemistry, 2009, vol. 44, # 7, p. 2828 - 2833] Application : Zonisamide Related Compound C; N'-(Benzisoxazol-3-ylmethylsulfonyl)-N,N-dimethylformimidamide is useful as reference Impurity standard. 
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Product Name : Zonisamide Sulfonyl Chloride; 1,2-Benzisoxazole-3-methanesulfonylchloride
Product Code : JCZNS-04 CAS : 73101-65-2 Formula : C8H8ClNO3S MWt : 231.66 Category : Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature : Chemical and Pharmaceutical Bulletin, 1982, vol. 30, # 1, p. 333 - 335 Application : Zonisamide Sulfonyl Chloride; 1,2-Benzisoxazole-3-methanesulfonylchloride is useful as reference Impurity standard. 
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Product Name : Zonisamide Acid; 1,2-Benzisoxazole-3-methanecarboxylic acid ; 1,2-Benzisoxazole-3-acetic acid; 2-(benzo[d]isoxazol-3-yl)acetic acid
Product Code : JCZNS-03 CAS : 4865-84-3 Formula : C9H7NO3 MWt : 177.16 Category : Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature : [European Journal of Medicinal Chemistry, 2009, vol. 44, # 7, p. 2828 - 2833] Application : Zonisamide Acid; 1,2-Benzisoxazole-3-methanecarboxylic acid ; 1,2-Benzisoxazole-3-acetic acid is useful as reference Impurity standard. ![Zonisamide Acid; 1,2-Benzisoxazole-3-methanecarboxylic acid ; 1,2-Benzisoxazole-3-acetic acid; 2-(benzo[d]isoxazol-3-yl)acetic acid](https://drjcrbio.com/wp-content/uploads/zonisamide-acid.png)
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Product Name : Zonisamide Related Compound A ;Zonisamide Sulfonate; Sodium 1,2-Benzisoxazole-3-methanesulfonate
Product Code : JCZNS-02 CAS : 73101-64-1 Formula : C8H8NNaO4S MWt : 235.19 Category : Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature : [Chemical and Pharmaceutical Bulletin, 1982, vol. 30, # 1, p. 333 - 335] Application : Zonisamide Related Compound A; Zonisamide Sulfonate; Sodium 1,2-Benzisoxazole-3-methanesulfonate is useful as reference Impurity standard. 
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Product Name : Zonisamide; 1-(1,2-Benzoxazol-3-yl)methanesulphonamide; 1,2-benzisoxazole-3-methanesulfonamide
Product Code : JCZNS-01 CAS : 68291-97-4 Formula : C8H8N2O3S MWt : 212.23 Category : Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities Literature : [Journal of Organic Chemistry, 2019, vol. 84, # 21, p. 13897 - 13907] Application : Zonisamide; 1-(1,2-Benzoxazol-3-yl)methanesulphonamide; 1,2-benzisoxazole-3-methanesulfonamide is useful as reference Impurity standard. 
