Last Updated: September 24, 2026

SULFAPHENAZOLE - Generic Drug Details

Name: SULFAPHENAZOLE Generic Launch, Drug Patent, and Exclusivity Dataset
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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What are the generic sources for sulfaphenazole and what is the scope of freedom to operate?

Sulfaphenazole is the generic ingredient in one branded drug marketed by Pharm Res Assoc and Purdue Frederick, and is included in two NDAs. Additional information is available in the individual branded drug profile pages.

Summary for SULFAPHENAZOLE

US Patents:	0
Tradenames:	1
Applicants:	2
NDAs:	2
Raw Ingredient (Bulk) Api Vendors:	93
DailyMed Link:	SULFAPHENAZOLE at DailyMed

Medical Subject Heading (MeSH) Categories for SULFAPHENAZOLE

Anti-Infective Agents

Anatomical Therapeutic Chemical (ATC) Classes for SULFAPHENAZOLE

J01ED	Long-acting sulfonamides
J01E	SULFONAMIDES AND TRIMETHOPRIM
J01	ANTIBACTERIALS FOR SYSTEMIC USE
J	Antiinfectives for systemic use

US Patents and Regulatory Information for SULFAPHENAZOLE

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Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Purdue Frederick	SULFABID	sulfaphenazole	TABLET;ORAL	013092-002	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Pharm Res Assoc	SULFABID	sulfaphenazole	SUSPENSION;ORAL	013093-001	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Exclusivity Expiration

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.