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5,10-Methylene-5,6,7,8-tetrahydrofolic acid

(2S)-2-[[4-(3-amino-1-oxo-2,5,6,6a,7,9-hexahydroimidazo[1,5-f]pteridin-8-yl)benzoyl]amino]pentanedioic acid · also: CH2H4folate · Folitixorina · Folitixorine · folitixorinum · 5,10-methylenetetrafolate · Tetrahydromethylenefolate

FormulaC20H23N7O6
Mol. weight457.447
PubChem CID135400185
InChIKeyQYNUQALWYRSVHF-ABLWVSNPSA-N
SMILESC1C2CN(CN2C3=C(N1)N=C(NC3=O)N)C4=CC=C(C=C4)C(=O)N[C@@H](CCC(=O)O)C(=O)O
1,933Patents
223Research papers
275Patents - last 3 years
2Papers - last 3 years

Who owns the IP

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

#AssigneePatents
1International Flavors and Fragrances Inc145
2Goodyear Tire and Rubber Co92
3BASF SE83
4Merck KGaA75
5Corteva Inc67
6AbbVie Inc50
7Evonik Industries AG35
8McGill University16
9Viracta Therapeutics Inc12
10Montana Tech Components AG11

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 preparations687
2A61PTherapeutic activity (drug indications)661
3C12NMicroorganisms, enzymes648
4C12PFermentation, enzyme processes580
5C07DHeterocyclic compounds279
6C12YEnzyme nomenclature (EC numbers)277
7C12QMeasuring/testing involving enzymes268
8C07KPeptides210
9G01NInvestigating / analysing materials202
10Y02EClimate change mitigation: energy192

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
Aptamers specific for biomolecules and methods of making1998Gilead Sciences Inc452
MODIFIED POLYNUCLEOTIDES FOR THE PRODUCTION OF CYTOPLASMIC AND CYTOSKELETAL PROTEINS2013Moderna Inc196
Bioconversion of a fermentable carbon source to 1,3-propanediol by a single microorganism1997Corteva Inc408
Methods and compositions for diagnosing or monitoring auto immune and chronic inflammatory diseases2005CareDx Inc265
COMPOSITIONS AND METHODS FOR PRODUCING ISOPRENE2009International Flavors and Fragrances Inc173

How research activity has moved

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

YearPapers
20165
20171
20183
20194
20204
20211
20231
20241

Who's driving the science

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

#AuthorAffiliationPapers
1R. Bruce DunlapUniversity of South Carolina9
2David G. PriestMedical University of South Carolina9
3Daniel V. SantiUniversity of California, San Francisco8
4Amnon KohenUniversity of Iowa6
5Rowena G. MatthewsUniversity of Michigan6
6Robert M. StroudUniversity of California, San Francisco5
7M.T. DoigMedical University of South Carolina5
8Zhenggang ZhangRoswell Park Comprehensive Cancer Center4
9Wojciech RodeInstytut Biologii Doświadczalnej im. Marcelego Nenckiego4
10Janet Finer-MooreUniversity of California, San Francisco4

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 5,10-Methylene-5,6,7,8-tetrahydrofolic acid?

5,10-Methylene-5,6,7,8-tetrahydrofolic acid has the molecular formula C20H23N7O6 and a molecular weight of 457.447.

Which organizations hold the most patents involving this compound?

International Flavors and Fragrances Inc holds the most patents (145), followed by Goodyear Tire and Rubber Co (92), BASF SE (83), Merck KGaA (75), and Corteva Inc (67).

What research topics are most commonly associated with published papers on this compound?

Research topics include Folate and B Vitamins Research, Epigenetics and DNA Methylation, Colorectal Cancer Treatments and Studies, and Photosynthetic Processes and Mechanisms, as shown in papers such as those studying methylenetetrahydrofolate reductase polymorphism and thymidylate synthase mechanisms.

How has patent activity for this compound changed in recent years?

Patent activity has grown significantly, with 47 patents filed in 2016, increasing to 146 in 2023 and 141 in 2024. Over the last 3 years, 275 patents have been filed involving this compound.

Which research groups have published the most papers on this compound?

R. Bruce Dunlap (University of South Carolina) and David G. Priest (Medical University of South Carolina) have each authored 9 papers, followed by Daniel V. Santi (University of California, San Francisco) with 8 papers, and Amnon Kohen (University of Iowa) and Rowena G. Matthews (University of Michigan) with 6 papers each.

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