O. Helen Chan

886 total citations
13 papers, 698 citations indexed

About

O. Helen Chan is a scholar working on Oncology, Molecular Biology and Organic Chemistry. According to data from OpenAlex, O. Helen Chan has authored 13 papers receiving a total of 698 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Oncology, 9 papers in Molecular Biology and 3 papers in Organic Chemistry. Recurrent topics in O. Helen Chan's work include Drug Transport and Resistance Mechanisms (7 papers), Analytical Chemistry and Chromatography (3 papers) and Receptor Mechanisms and Signaling (3 papers). O. Helen Chan is often cited by papers focused on Drug Transport and Resistance Mechanisms (7 papers), Analytical Chemistry and Chromatography (3 papers) and Receptor Mechanisms and Signaling (3 papers). O. Helen Chan collaborates with scholars based in United Kingdom, United States and New Zealand. O. Helen Chan's co-authors include Barbra H. Stewart, Eric L. Reyner, Bruce A. Steinbaugh, Michael D. Taylor, William A. Denny, H. D. Hollis Showalter, Jeff B. Smaill, Gordon W. Rewcastle, Patrick W. Vincent and Joseph A. Loo and has published in prestigious journals such as Advanced Drug Delivery Reviews, Journal of Medicinal Chemistry and Pharmaceutical Research.

In The Last Decade

O. Helen Chan

13 papers receiving 652 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
O. Helen Chan United Kingdom 11 278 269 155 135 116 13 698
Joanne Brodfuehrer United States 14 370 1.3× 347 1.3× 109 0.7× 71 0.5× 65 0.6× 36 934
Eric L. Reyner United States 15 495 1.8× 419 1.6× 229 1.5× 83 0.6× 51 0.4× 23 1.1k
Viera Lukáčová United States 18 234 0.8× 371 1.4× 95 0.6× 184 1.4× 109 0.9× 56 951
Kimberley A. Lentz United States 14 305 1.1× 199 0.7× 108 0.7× 323 2.4× 139 1.2× 24 963
Svein Øie United States 16 306 1.1× 368 1.4× 52 0.3× 70 0.5× 75 0.6× 45 982
Lanyan Fang United States 17 349 1.3× 593 2.2× 246 1.6× 175 1.3× 46 0.4× 68 1.4k
Glen Leesman United States 11 197 0.7× 133 0.5× 26 0.2× 198 1.5× 86 0.7× 15 548
Nicola Colclough United Kingdom 18 228 0.8× 555 2.1× 219 1.4× 29 0.2× 77 0.7× 36 965
Susan Cole United Kingdom 14 268 1.0× 276 1.0× 99 0.6× 42 0.3× 103 0.9× 28 916
Jason Boer United States 9 169 0.6× 406 1.5× 188 1.2× 34 0.3× 59 0.5× 12 1.0k

Countries citing papers authored by O. Helen Chan

Since Specialization
Citations

This map shows the geographic impact of O. Helen Chan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by O. Helen Chan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. Helen Chan more than expected).

Fields of papers citing papers by O. Helen Chan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by O. Helen Chan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by O. Helen Chan. The network helps show where O. Helen Chan may publish in the future.

Co-authorship network of co-authors of O. Helen Chan

This figure shows the co-authorship network connecting the top 25 collaborators of O. Helen Chan. A scholar is included among the top collaborators of O. Helen Chan based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with O. Helen Chan. O. Helen Chan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

13 of 13 papers shown
1.
2.
Smaill, Jeff B., Gordon W. Rewcastle, Alexander J. Bridges, et al.. (2000). Tyrosine Kinase Inhibitors. 17. Irreversible Inhibitors of the Epidermal Growth Factor Receptor:  4-(Phenylamino)quinazoline- and 4-(Phenylamino)pyrido[3,2-d]pyrimidine-6-acrylamides Bearing Additional Solubilizing Functions.. Journal of Medicinal Chemistry. 43(16). 3199–3199. 12 indexed citations
3.
Zhu, Zhijian, et al.. (2000). Phosphate prodrugs of PD154075. Bioorganic & Medicinal Chemistry Letters. 10(10). 1121–1124. 12 indexed citations
4.
5.
Stewart, Barbra H., et al.. (1998). Hydrophobicity of HIV Protease Inhibitors by Immobilized Artificial Membrane Chromatography: Application and Significance to Drug Transport. Pharmaceutical Research. 15(9). 1401–1406. 28 indexed citations
6.
Chan, O. Helen, et al.. (1998). Evaluation of a Targeted Prodrug Strategy to Enhance Oral Absorption of Poorly Water-Soluble Compounds. Pharmaceutical Research. 15(7). 1012–1018. 21 indexed citations
7.
Chan, O. Helen, Michael Sinz, & Barbra H. Stewart. (1997). Multiple-model evaluation of absorption of a tachykinin receptor antagonist. Advanced Drug Delivery Reviews. 23(1-3). 121–131. 1 indexed citations
8.
Stewart, Barbra H., et al.. (1997). Discrimination between drug candidates using models for evaluation of intestinal absorption. Advanced Drug Delivery Reviews. 23(1-3). 27–45. 54 indexed citations
9.
Chan, O. Helen & Barbra H. Stewart. (1996). Physicochemical and drug-delivery considerations for oral drug bioavailability. Drug Discovery Today. 1(11). 461–473. 109 indexed citations
10.
Chan, O. Helen, et al.. (1996). Absorption of Cam-2445, an NK1 Neurokinin Receptor Antagonist: In Vivo, In Situ, and In Vitro Evaluations. Journal of Pharmaceutical Sciences. 85(3). 253–257. 13 indexed citations
11.
Hamilton, Harriet W., Bruce A. Steinbaugh, Barbra H. Stewart, et al.. (1995). Evaluation of Physicochemical Parameters Important to the Oral Bioavailability of Peptide-like Compounds: Implications for the Synthesis of Renin Inhibitors. Journal of Medicinal Chemistry. 38(9). 1446–1455. 24 indexed citations
12.
Stewart, Barbra H., et al.. (1995). Comparison of Intestinal Permeabilities Determined in Multiple in Vitro and inSitu Models: Relationship to Absorption in Humans. Pharmaceutical Research. 12(5). 693–699. 149 indexed citations
13.
Hamilton, Harriet W., Bruce A. Steinbaugh, Michael D. Taylor, et al.. (1993). Evaluation of the intestinal permeability and hepatic handling of peptidomimetic analogs. Bioorganic & Medicinal Chemistry Letters. 3(5). 813–818. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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