Howard L. Constant

697 total citations
13 papers, 525 citations indexed

About

Howard L. Constant is a scholar working on Plant Science, Molecular Biology and Spectroscopy. According to data from OpenAlex, Howard L. Constant has authored 13 papers receiving a total of 525 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Plant Science, 7 papers in Molecular Biology and 3 papers in Spectroscopy. Recurrent topics in Howard L. Constant's work include Analytical Chemistry and Chromatography (3 papers), Phytochemistry and Biological Activities (3 papers) and Bioactive natural compounds (2 papers). Howard L. Constant is often cited by papers focused on Analytical Chemistry and Chromatography (3 papers), Phytochemistry and Biological Activities (3 papers) and Bioactive natural compounds (2 papers). Howard L. Constant collaborates with scholars based in United States, Thailand and United Kingdom. Howard L. Constant's co-authors include Geoffrey A. Cordell, Chris Beecher, Dennis P. West, A. Douglas Kinghorn, John M. Pezzuto, Vichai Reutrakul, Thawatchai Santisuk, Norman R. Farnsworth, Geoffrey A. Cordell and Swapan K. Chaudhuri and has published in prestigious journals such as Food Chemistry, New Phytologist and The Journal of Organic Chemistry.

In The Last Decade

Howard L. Constant

13 papers receiving 492 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Howard L. Constant United States 10 271 214 91 58 57 13 525
Heinz‐Jürgen Bertram Germany 13 153 0.6× 105 0.5× 121 1.3× 98 1.7× 35 0.6× 23 470
S. Fkih‐Tetouani Morocco 12 244 0.9× 380 1.8× 114 1.3× 69 1.2× 25 0.4× 26 671
Eric Frérot Switzerland 15 169 0.6× 257 1.2× 127 1.4× 70 1.2× 27 0.5× 21 655
B Boros Hungary 12 152 0.6× 197 0.9× 138 1.5× 67 1.2× 37 0.6× 42 621
Margarita García de Bravo Argentina 13 318 1.2× 148 0.7× 75 0.8× 67 1.2× 53 0.9× 22 646
Tetsuya Yanai Japan 12 92 0.3× 151 0.7× 38 0.4× 66 1.1× 31 0.5× 30 399
Hua-Ying Zhou China 9 206 0.8× 115 0.5× 60 0.7× 28 0.5× 29 0.5× 11 431
Ibrahim Iliya Japan 16 399 1.5× 241 1.1× 84 0.9× 93 1.6× 100 1.8× 39 727
Ki Chang Jang South Korea 14 153 0.6× 181 0.8× 92 1.0× 114 2.0× 45 0.8× 29 488
Shinsuke Marumoto Japan 15 191 0.7× 200 0.9× 75 0.8× 121 2.1× 148 2.6× 50 623

Countries citing papers authored by Howard L. Constant

Since Specialization
Citations

This map shows the geographic impact of Howard L. Constant'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 Howard L. Constant with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Howard L. Constant more than expected).

Fields of papers citing papers by Howard L. Constant

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Howard L. Constant. 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 Howard L. Constant. The network helps show where Howard L. Constant may publish in the future.

Co-authorship network of co-authors of Howard L. Constant

This figure shows the co-authorship network connecting the top 25 collaborators of Howard L. Constant. A scholar is included among the top collaborators of Howard L. Constant 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 Howard L. Constant. Howard L. Constant 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.
Mein, Jonathan R., et al.. (2014). An improved UHPLC-UV method for separation and quantification of carotenoids in vegetable crops. Food Chemistry. 165. 475–482. 36 indexed citations
2.
Τράκα, Μαρία, Shikha Saha, Stanislav Kopřiva, et al.. (2013). Genetic regulation of glucoraphanin accumulation in Beneforté® broccoli. New Phytologist. 198(4). 1085–1095. 92 indexed citations
3.
Seo, Eun Kyoung, Heebyung Chai, Howard L. Constant, et al.. (1999). Resveratrol Tetramers from Vatica diospyroides. The Journal of Organic Chemistry. 64(19). 6976–6983. 67 indexed citations
4.
Constant, Howard L., Chris Beecher, Norman R. Farnsworth, et al.. (1998). Xanthones from the twigs of Mammea siamensis. Phytochemistry. 47(8). 1661–1663. 26 indexed citations
5.
Cui, Baoliang, Heebyung Chai, Howard L. Constant, et al.. (1998). Limonoids from Azadirachta excelsa. Phytochemistry. 47(7). 1283–1287. 22 indexed citations
6.
Constant, Howard L., Chris Beecher, N.R. Farnsworth, et al.. (1998). ChemInform Abstract: Xanthones from the Twigs of Mammea siamensis.. ChemInform. 29(34). 3 indexed citations
7.
CORDELL, G. A., Chris Beecher, N.R. Farnsworth, et al.. (1998). ChemInform Abstract: Recent Studies on Biologically Active Natural Products. ChemInform. 29(51). 2 indexed citations
8.
Constant, Howard L., Karla Slowing, James G. Graham, et al.. (1997). A general method for the dereplication of flavonoid glycosides utilizing high performance liquid chromatography/mass spectrometric analysis. Phytochemical Analysis. 8(4). 176–180. 36 indexed citations
9.
Constant, Howard L., Geoffrey A. Cordell, & Dennis P. West. (1996). Nonivamide, a Constituent of Capsicum oleoresin. Journal of Natural Products. 59(4). 425–426. 70 indexed citations
10.
Constant, Howard L., Geoffrey A. Cordell, Dennis P. West, & John H. Johnson. (1995). Separation and Quantification of Capsaicinoids Using Complexation Chromatography. Journal of Natural Products. 58(12). 1925–1928. 35 indexed citations
11.
Pengsuparp, Thitima, Lining Cai, Howard L. Constant, et al.. (1995). Mechanistic Evaluation of New Plant-Derived Compounds That Inhibit HIV-1 Reverse Transcriptase. Journal of Natural Products. 58(7). 1024–1031. 84 indexed citations
12.
Constant, Howard L. & Chris Beecher. (1995). A Method for the Dereplication of Natural Product Extracts using Electrospray HPLC/MS. Natural product letters. 6(3). 193–196. 47 indexed citations
13.
Bohm, Bruce A. & Howard L. Constant. (1990). Leaf surface flavonoids of Eriodictyon trichocalyx. Biochemical Systematics and Ecology. 18(7-8). 491–492. 5 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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