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Diazon

disodium;[4-[4-(sulfinatomethylamino)phenyl]sulfonylanilino]methanesulfinate · also: Diasone, Diamidin, sulfoxone, Aldapsone, Novotrone, Aldesulfone

FormulaC14H14N2Na2O6S3
Mol. weight448.4335
PubChem CID8954
InChIKeyAZBNFLZFSZDPQF-UHFFFAOYSA-L
SMILESC1=CC(=CC=C1NCS(=O)[O-])S(=O)(=O)C2=CC=C(C=C2)NCS(=O)[O-].[Na+].[Na+]
1,105Patents
55Research papers
38Patents - last 3 years
0Papers - last 3 years

Who owns the IP

The organizations most actively patenting around this compound, ranked by referenced patent volume.

#AssigneePatents
1Bausch and Lomb Inc60
2Koninklijke Philips NV47
3Allergan Inc33
4Insmed Inc30
5aTyr Pharma Inc20
6Bayer CropScience AG19
7US Department of Health and Human Services19
8Aradigm Corp18
9Santen Pharmaceutical Co Ltd18
10BASF SE16

Explore the full landscape

This preview shows the leading assignees. Cypris reveals the full ownership landscape - every filing entity, filing trends, and portfolio momentum.

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Where innovation is concentrated

Patent classifications ranked by volume reveal the technical domains with the most active filing.

#CodeAreaPatents
1A61KMedicinal preparations715
2A61PTherapeutic activity (drug indications)637
3C07DHeterocyclic compounds142
4Y02AClimate change adaptation136
5A61LSterilising / disinfecting materials102
6C12NMicroorganisms, enzymes98
7C07KPeptides90
8A61F72
9A01NPreservation of bodies; biocides; pest repellents68
10C07CAcyclic and carbocyclic compounds54

AI mapped opportunity space

This preview shows where patent activity concentrates. Cypris maps the full classification landscape to surface technical whitespace and IP headroom.

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Most-cited patents

Patents ranked by forward citations reveal the foundational inventions the field continues to build on.

TitleYearAssigneeCited by
TWO-COMPONENT DIAZON TYPE MATERIAL1984Hoechst AG2
Diamidine compounds as DNA minor groove binders2007University of North Carolina at Chapel Hill1
BLACK OF SMOKE THAT HAS REACTED WITH DIAZON SALTS.2006Cabot Corp0
PROCEDURE FOR THE PRODUCTION OF WATER SOLUTIONS OF DIAZON SALTS.2003Clariant Produkte Deutschland GmbH0
DIAMIDINE COMPOUNDS AS DNA MINOR GROOVE BINDERS2002University of North Carolina at Chapel Hill0

Who's driving the science

The most-published authors working with this compound, alongside their primary affiliations.

#AuthorAffiliationPapers
1E. Carboni3
2J. Martínez‐Fernández3
3Carleen Klumpp‐ThomasNational Institutes of Health2
4Chris M. IrelandUniversity of Utah1
5Doull Ja2
6Gerhard RaabeRWTH Aachen University2
7Hans‐Joachim GaisRWTH Aachen University2
8Jennifer M. SchomakerUniversity of Wisconsin–Madison2
9Joy Barnes CrossThe University of Texas Medical Branch at Galveston2
10Matthew D. HallNational Institutes of Health2

Research leaders

This preview lists the top authors. Cypris surfaces the full researcher landscape, their affiliations, and how scientific influence is shifting.

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The literature that defines it

The most-cited papers anchoring the scientific record for this compound.

Frequently asked questions

Common questions about this compound's patent and research landscape, answered from the underlying data.

What is the molecular formula and weight of Diazon?

Diazon has the molecular formula C14H14N2Na2O6S3 and a molecular weight of 448.4335 g/mol. It is also known by several synonyms including Diasone, Diamidin, sulfoxone, and Aldapsone.

Which organizations hold the most patents related to Diazon?

Bausch and Lomb Inc leads with 60 patents, followed by Koninklijke Philips NV with 47 patents, and Allergan Inc with 33 patents. Other significant patent holders include Insmed Inc with 30 patents and aTyr Pharma Inc with 20 patents.

How many patents and papers are in the database for Diazon, and what is the recent activity?

The database contains 1,105 total patents and 55 papers related to Diazon. Over the last three years (2022–2025), there have been 38 new patents filed, though no new papers were added in that period.

What are the primary patent classification codes associated with Diazon research?

The most frequently used CPC classification is A61K (Preparations for medical, dental, or toilet purposes) with 715 patents, followed by A61P (Specific therapeutic activity of chemical compounds or medicinal preparations) with 637 patents. Other significant classifications include C07D (Heterocyclic compounds) with 142 patents and Y02A (Technologies for adaptation to climate change) with 136 patents.

What notable research topics are associated with papers on Diazon?

Key research topics include Neutrophil, Myeloperoxidase and Oxidative Mechanisms; Asymmetric Synthesis and Catalysis; Catalytic C–H Functionalization Methods; and Celiac Disease Research and Management. A 1951 paper on Sulfoxone (Diasone) sodium for dermatitis herpetiformis has accumulated 38 citations.

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