Citation Rankings
Highly Cited Researchers

Natural Sciences / Chemical Sciences Highly Cited Researchers 7 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Egypt
Hany Ibrahim
Pharmaceutical analytical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,586
1,542
0.596
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Egypt
Mohamed A. Sayed|Mohamed A. Said
Medicinal chemistry
Organic chemistry
Drug design
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
278
268
0.964
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Egypt
Takwa Ellakwa
Physical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
150
145
0.967
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Egypt
Omar M El-Abassy
Analytical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
137
137
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Egypt
Heidi Abdelhadi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98
98
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Egypt
Ebraam Adel
Analytical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89
88
0.989
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Egypt
Alaa Reda
pharmacy
pharmaceutical analytical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000
* Last 6 Years Citation Counts Rankings
Rankings
309,584
Egypt
1,081
3
Ranking Based On Selection: 1
Hany Ibrahim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,586
1,542
0.596
* Last 6 Years Citation Counts Rankings
Rankings
970,311
Egypt
6,398
10
Ranking Based On Selection: 2
Mohamed A. Sayed|Mohamed A. Said
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
278
268
0.964
Medicinal chemistry
Organic chemistry
Drug design
* Last 6 Years Citation Counts Rankings
Rankings
1,263,313
Egypt
10,554
22
Ranking Based On Selection: 3
Takwa Ellakwa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
150
145
0.967
* Last 6 Years Citation Counts Rankings
Rankings
1,290,976
Egypt
11,011
26
Ranking Based On Selection: 4
Omar M El-Abassy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
137
137
1.000
* Last 6 Years Citation Counts Rankings
Rankings
1,447,596
Egypt
13,973
33
Ranking Based On Selection: 5
Heidi Abdelhadi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
98
98
1.000
* Last 6 Years Citation Counts Rankings
Rankings
1,495,713
Egypt
14,879
40
Ranking Based On Selection: 6
Ebraam Adel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
89
88
0.989
* Last 6 Years Citation Counts Rankings
Rankings
1,909,440
Egypt
23,198
77
Ranking Based On Selection: 7
Alaa Reda
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29
29
1.000
pharmacy
pharmaceutical analytical chemistry