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Azure A

(7-aminophenothiazin-3-ylidene)-dimethylazanium chloride · also: Azur A · Sinitest · Azuresin · Giemsa stain · giemsa-stain · Diagnex Blue

FormulaC14H14ClN3S
Mol. weight291.797
PubChem CID13735
InChIKeyNALREUIWICQLPS-UHFFFAOYSA-N
SMILESC[N+](=C1C=CC2=NC3=C(C=C(C=C3)N)SC2=C1)C.[Cl-]
6,965Patents
119Research papers
874Patents - last 3 years
6Papers - last 3 years

Who owns the IP

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

#AssigneePatents
1Roche Holding AG158
210X Genomics Inc155
3LG Chem Ltd90
4Covestro AG75
5Kimberly Clark Corp72
6GSK PLC59
7Weizmann Institute of Science59
8Labrador Diagnostics LLC48
9Massachusetts Institute of Technology47
10Arkray Inc46

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 preparations2,929
2A61PTherapeutic activity (drug indications)2,738
3G01NInvestigating / analysing materials1,813
4C12NMicroorganisms, enzymes1,081
5C07KPeptides1,056
6C12QMeasuring/testing involving enzymes873
7C07DHeterocyclic compounds614
8Y02AClimate change adaptation612
9A61LSterilising / disinfecting materials462
10Y10SCross-reference (legacy)252

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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Representative patents

The filings that best characterise the patent activity around this compound, most-referenced first.

TitleYearAssigneeCited by
GRAPHIC DIAGNOSIS PROBE FOR DISEASE ACCEPTING ACCUMULATING AMYLOID BY AZURE A ANALOG COMPOUND AND COMPOSITION FOR GRAPHIC DIAGNOSIS CONTAINING THE SAME200014
A kind of method of quick carry out Rui Shi Giemsa stainings20188
Method for purifying electronic mediator azure C20221
Method for detecting quality of Rui-Giemsa staining solution and method for improving quality of Rui-Giemsa staining solution20230
Method for purifying electronic mediator azure C20220

How research activity has moved

Papers published per year for this compound, over the last decade of indexed records.

YearPapers
20162
20172
20181
20192
20202
20213
20221
20234
20242

Who's driving the science

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

#AuthorAffiliationPapers
1Victor C. YangUniversity of Michigan4
2Guangwen CaoNanjing University4
3Qingcai Jiao4
4Tania García‐MendiolaUniversidad Autónoma de Madrid3
5Dutt Mk3
6F. ParienteUniversidad Autónoma de Madrid3
7Encarnación LorenzoUniversidad Autónoma de Madrid3
8Gopinatha Suresh KumarIndian Institute of Chemical Biology3
9Robert A. DrongowskiUniversity of Michigan3
10Liyan KongHunan Normal University2

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 Azure A?

Azure A has the molecular formula C14H14ClN3S and a molecular weight of 291.797 g/mol.

Which organizations hold the most patents involving Azure A?

Roche Holding AG leads with 158 patents, followed by 10X Genomics Inc with 155 patents, and LG Chem Ltd with 90 patents.

How has patent activity for Azure A changed in recent years?

Patent activity has increased significantly in recent years, rising from 213 patents in 2016 to a peak of 403 patents in 2024. The last three years (2022–2024) show a substantial increase, with 350, 395, and 403 patents respectively.

What are the major CPC patent classifications associated with Azure A?

The most prevalent CPC classifications are A61K (pharmaceutical preparations) with 2,929 patents, A61P (therapeutic applications) with 2,738 patents, and G01N (analytical instruments and methods) with 1,813 patents.

Which researchers have published the most papers on Azure A?

Victor C. Yang from University of Michigan, Guangwen Cao from Nanjing University, and Qingcai Jiao have each published 4 papers on Azure A.

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