Who are Azo Gantrisin's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Opsumit, Letairis, Tracleer, Gantrisin, Pivlaz, Ambrisentan plus Spironolactone.

How often does this brief refresh?

Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Last reviewed 2026-06-10 · How we verify

Azo Gantrisin — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Azo Gantrisin (sulfafurazole) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Sulfonamide Antimicrobial. Area: Immunology.

marketed Sulfonamide Antimicrobial Endothelin-1 receptor Immunology Live · refreshed every 30 min

Target snapshot

Azo Gantrisin (sulfafurazole) — Alra.

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
Azo Gantrisin TARGET	sulfafurazole	Alra	marketed	Sulfonamide Antimicrobial	Endothelin-1 receptor	1971-01-01
Opsumit	MACITENTAN	AstraZeneca	marketed	Endothelin Receptor Antagonist [EPC]	Endothelin-1 receptor	2013-01-01
Letairis	AMBRISENTAN	Gilead Sciences	marketed	Endothelin Receptor Antagonist [EPC]	Endothelin-1 receptor	2007-01-01
Tracleer	BOSENTAN	AstraZeneca	marketed	Endothelin Receptor Antagonist	Endothelin-1 receptor	2001-01-01
Gantrisin	SULFISOXAZOLE ACETYL	Roche	marketed		Endothelin B receptor, Endothelin-1 receptor, Dihydropteroate synthase	1953-01-01
Pivlaz	CLAZOSENTAN	Idorsia Pharmaceuticals Japan Ltd	marketed		Endothelin-1 receptor
Ambrisentan plus Spironolactone	Ambrisentan plus Spironolactone	Brigham and Women's Hospital	marketed	Endothelin receptor antagonist + Mineralocorticoid receptor antagonist combination	Endothelin-1 receptor (ETA/ETB) + Mineralocorticoid receptor

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

2027-12-28 — Tracleer · 7959945 · Formulation · US

Sponsor landscape (Sulfonamide Antimicrobial class)

Alra · 1 drug in this class

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Cite this brief

Drug Landscape (2026). Azo Gantrisin — Competitive Intelligence Brief. https://druglandscape.com/ci/sulfafurazole. Accessed 2026-06-10.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing