A. P. Lötter

1.1k total citations
49 papers, 919 citations indexed

About

A. P. Lötter is a scholar working on Materials Chemistry, Spectroscopy and Pharmaceutical Science. According to data from OpenAlex, A. P. Lötter has authored 49 papers receiving a total of 919 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Materials Chemistry, 17 papers in Spectroscopy and 15 papers in Pharmaceutical Science. Recurrent topics in A. P. Lötter's work include Analytical Chemistry and Chromatography (17 papers), Crystallization and Solubility Studies (17 papers) and Drug Solubulity and Delivery Systems (14 papers). A. P. Lötter is often cited by papers focused on Analytical Chemistry and Chromatography (17 papers), Crystallization and Solubility Studies (17 papers) and Drug Solubulity and Delivery Systems (14 papers). A. P. Lötter collaborates with scholars based in South Africa and United States. A. P. Lötter's co-authors include Melgardt M. de Villiers, J. G. van der Watt, Mino R. Caira, Wilna Liebenberg, Jan L. du Preez, J. Keith Guillory, Jacobus J. Bergh, Dale Eric Wurster, HH Vorster and Sarel F. Malan and has published in prestigious journals such as Journal of Chromatography A, International Journal of Pharmaceutics and Journal of Pharmaceutical Sciences.

In The Last Decade

A. P. Lötter

48 papers receiving 853 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
A. P. Lötter South Africa 18 403 385 225 214 164 49 919
J. Keith Guillory United States 17 322 0.8× 270 0.7× 272 1.2× 154 0.7× 145 0.9× 43 799
Dharmendra Singhal United States 14 383 1.0× 422 1.1× 187 0.8× 141 0.7× 94 0.6× 17 962
A. M. Guyot-Hermann France 10 345 0.9× 409 1.1× 88 0.4× 184 0.9× 106 0.6× 17 704
Kazuo Tomono Japan 20 393 1.0× 448 1.2× 187 0.8× 145 0.7× 79 0.5× 74 1.2k
Yoshinobu Nakai Japan 20 364 0.9× 632 1.6× 269 1.2× 73 0.3× 171 1.0× 51 998
Yasuo Yoshihashi Japan 18 383 1.0× 540 1.4× 163 0.7× 111 0.5× 104 0.6× 49 942
Minoru Yoshioka Japan 11 660 1.6× 651 1.7× 237 1.1× 125 0.6× 107 0.7× 14 1.1k
Garima Chawla India 13 414 1.0× 438 1.1× 151 0.7× 118 0.6× 116 0.7× 17 748
Ryusuke Takano Japan 11 512 1.3× 512 1.3× 142 0.6× 307 1.4× 94 0.6× 13 951
Vishal Koradia Denmark 11 345 0.9× 320 0.8× 163 0.7× 158 0.7× 101 0.6× 15 652

Countries citing papers authored by A. P. Lötter

Since Specialization
Citations

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

Fields of papers citing papers by A. P. Lötter

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. P. Lötter. 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 A. P. Lötter. The network helps show where A. P. Lötter may publish in the future.

Co-authorship network of co-authors of A. P. Lötter

This figure shows the co-authorship network connecting the top 25 collaborators of A. P. Lötter. A scholar is included among the top collaborators of A. P. Lötter 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 A. P. Lötter. A. P. Lötter is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Villiers, Melgardt M. de, et al.. (2004). Comparison of the Physical and Chemical Stability of Niclosamide Crystal Forms in Aqueous Versus Nonaqueous Suspensions. Drug Development and Industrial Pharmacy. 30(6). 581–592. 19 indexed citations
2.
Liebenberg, Wilna, et al.. (2000). Characterization of Zopiclone Crystal Forms Found Among Generic Raw Materials. Drug Development and Industrial Pharmacy. 26(5). 531–537. 5 indexed citations
3.
Villiers, Melgardt M. de, et al.. (2000). Solubility and Dissolution Properties of Generic Rifampicin Raw Materials. Drug Development and Industrial Pharmacy. 26(4). 403–408. 57 indexed citations
4.
Liebenberg, Wilna, et al.. (1999). The Effect of Polymorphism on Powder Compaction and Dissolution Properties of Chemically Equivalent Oxytetracycline Hydrochloride Powders. Drug Development and Industrial Pharmacy. 25(9). 1027–1033. 25 indexed citations
5.
Lötter, A. P., et al.. (1998). A Study of the Changes During Heating of Paracetamol. Drug Development and Industrial Pharmacy. 24(5). 447–453. 18 indexed citations
6.
Liebenberg, Wilna, et al.. (1998). Identification of the Mebendazole Polymorphic Form Present in Raw Materials and Tablets Available in South Africa. Drug Development and Industrial Pharmacy. 24(5). 485–488. 31 indexed citations
7.
Preez, Jan L. du & A. P. Lötter. (1996). Solid-phase extraction and HPLC determination of levamisole hydrochloride in sheep plasma.. PubMed. 63(3). 209–11. 6 indexed citations
8.
Villiers, Melgardt M. de, J. G. van der Watt, & A. P. Lötter. (1993). Kinetic Study of the Solid-State Thermal Interconversion of the Polymorphic Forms of Chloramphenicol Palmitate. Drug Development and Industrial Pharmacy. 19(14). 1731–1739. 1 indexed citations
9.
Villiers, Melgardt M. de, J. G. van der Watt, & A. P. Lötter. (1992). Kinetic study of the solid-state photolytic degradation of two polymorphic forms of furosemide. International Journal of Pharmaceutics. 88(1-3). 275–283. 42 indexed citations
10.
Lötter, A. P., et al.. (1991). Moisture the dominant factor in the stability of doxylamine succinate tablets. Drug Development and Industrial Pharmacy. 17(1). 157–163. 1 indexed citations
11.
Watt, J. G. van der, et al.. (1991). Physical characterisation of three pseudopolymorphs of cyclopenthiazide. International Journal of Pharmaceutics. 69(3). 265–268. 1 indexed citations
12.
Lötter, A. P., et al.. (1990). Compatibility Study Between Atenolol and Tablet Excipients Using Differential Scanning Calorimetry. Drug Development and Industrial Pharmacy. 16(12). 1945–1954. 30 indexed citations
13.
Lötter, A. P., et al.. (1990). Compatibility Study Between Naproxen and Tablet Excipients Using Differential Scanning Calorimetry. Drug Development and Industrial Pharmacy. 16(4). 673–683. 45 indexed citations
14.
Caira, Mino R., et al.. (1990). Polymorphism of doxylamine succinate and X-ray structural study of Form I and of doxylamine succinate 0.5 succinic acid. International Journal of Pharmaceutics. 63(1). 35–42. 3 indexed citations
15.
Caira, Mino R., et al.. (1989). Physical Characterization of the Methanol Solvate of Urapidil. Journal of Pharmaceutical Sciences. 78(1). 28–34. 7 indexed citations
16.
Lötter, A. P., et al.. (1988). Physical Characterization of Two Oxyphenbutazone Pseudopolymorphs. Journal of Pharmaceutical Sciences. 77(12). 1047–1049. 8 indexed citations
17.
Caira, Mino R., et al.. (1988). Physical Characterization of the Hydrates of Urapidil. Journal of Pharmaceutical Sciences. 77(5). 444–451. 7 indexed citations
18.
Lötter, A. P., et al.. (1987). Dsc Screening for Drug-Excipient and Excipient Excipient Interactions in Polypharmaceuticals Intended for the Alleviation of the Symptoms of Colds and FLU. III. Drug Development and Industrial Pharmacy. 13(7). 1197–1215. 15 indexed citations
19.
Caira, Mino R., et al.. (1987). Physicochemical Properties and X-ray Structural Studies of the Trigonal Polymorph of Carbamazepine. Journal of Pharmaceutical Sciences. 76(9). 744–752. 172 indexed citations
20.
Guillory, J. Keith, et al.. (1986). Physical characterization of solid forms of urapidil. Journal of Pharmaceutical and Biomedical Analysis. 4(5). 573–587. 6 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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