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4-Chlorobenzaldehyde

4-chlorobenzaldehyde · also: 4-Chlorbenzaldehyd · 4-chlorobenzaldehye · 4-Chlorobenzaldehyd · 4-chlorobezaldehyde · 4-formylchlorobenzene · 4-chloro-benzaldehyde

FormulaC7H5ClO
Mol. weight140.566
PubChem CID7726
InChIKeyAVPYQKSLYISFPO-UHFFFAOYSA-N
SMILESC1=CC(=CC=C1C=O)Cl
28,327Patents
132Research papers128 indexed in detail
1,503Patents - 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
1Bayer AG926
2Roche Holding AG884
3Novartis AG649
4Fujifilm Holdings Corp578
5BASF SE521
6Pfizer Inc499
7Johnson and Johnson383
8Merck and Co Inc329
9Daiichi Sankyo Co Ltd312
10Sanofi SA280

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
1C07DHeterocyclic compounds15,461
2A61PTherapeutic activity (drug indications)13,136
3A61KMedicinal preparations8,358
4C07CAcyclic and carbocyclic compounds5,910
5C07KPeptides2,314
6C07FOrganometallic compounds1,728
7A01NPreservation of bodies; biocides; pest repellents1,554
8Y02PClimate change mitigation: production1,385
9G03F1,333
10C07BGeneral methods of organic chemistry1,095

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
Method for preparing chloramphenicol from 4-chlorobenzaldehyde20124
Method for synthesizing chloramphenicol from 4-chlorobenzaldehyde20122
Preparation method and application of 3-methoxy-4-chlorobenzaldehyde20250
The synthetic method of fenarol pharmaceutical intermediate 4- chlorobenzaldehydes20180
Fenner dew drug intermediates 4-chlorobenzaldehyde synthesis method20180

How research activity has moved

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

YearPapers
20161
20181
20192
20201
20211

Who's driving the science

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

#AuthorAffiliationPapers
1Hoong‐Kun FunUniversiti Sains Malaysia14
2Muhammad Nawaz TahirUniversity of Sargodha6
3Edward R. T. TiekinkUniversity of Malaya4
4Noriyuki YonezawaTokyo University of Agriculture and Technology4
5Akiko OkamotoTokyo University of Agriculture and Technology4
6Bohari M. YaminNational University of Malaysia4
7Ray J. ButcherHoward University4
8Seik Weng NgUniversity of Malaya4
9Keiichi NoguchiTokyo University of Agriculture and Technology3
10H. Stoeckli‐EvansUniversity of Neuchâtel3

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 4-chlorobenzaldehyde?

4-chlorobenzaldehyde has the molecular formula C7H5ClO and a molecular weight of 140.566.

Which organizations hold the most patents involving 4-chlorobenzaldehyde?

The leading patent assignees are Bayer AG with 926 patents, Roche Holding AG with 884 patents, and Novartis AG with 649 patents.

How many patents and papers involving 4-chlorobenzaldehyde have been published in recent years?

In the last three years, there have been 1,503 patents involving 4-chlorobenzaldehyde and 0 papers.

What are common applications of 4-chlorobenzaldehyde based on patent classification?

Patents involving 4-chlorobenzaldehyde are predominantly classified under C07D (organic chemistry, heterocyclic compounds) with 15,461 patents, followed by A61P (pharmaceutical applications) with 13,136 patents, and A61K (pharmaceutical preparations) with 8,358 patents.

What specific pharmaceutical applications have been patented for 4-chlorobenzaldehyde?

Patents describe methods for preparing chloramphenicol from 4-chlorobenzaldehyde and synthesis of pharmaceutical intermediates such as fenarol. Additionally, a patent from 2025 covers preparation and application of 3-methoxy-4-chlorobenzaldehyde.

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