Anal. Chem. 67, 295R-313R (1995). A review with 728 references on the methodology of analysing pharmaceuticals and related compounds, including TLC applications in the field.

J. Planar Chromatogr. 10, 80-89 (1997). Review for the period of 1994-1996 of advances in the applications of TLC and HPTLC for the separation, detection, and qualitative and quantitative determination of pesticides, other agrochemicals, and related compounds. Analyses are covered for a variety of samples, such as food and environmental, and for residues of pesticides of various types, including insecticides, herbicides, and fungicides, belonging to different chemical classes. A limited number of references on formulation analysis and the use of radio-TLC for studies of pesticide metabolism are also included. A collection of representative chromatographic systems for practical separations and analyses of a variety of pesticides are presented at the end of the review: 1. Introduction; 2. Materials and techniques (Sample preparation; thin layer plates, mobile phase selection, and plate development; detection and identification of zones), 3. Applications of TLC (General analytical studies and multiclass, multiresidue procedures; organochlorine (OC) and pyrethroid insecticides; organophosphorus (OP) pesticides; carbamate insecticides; herbicides and plant growth regulators; fungicides; miscellaneous pesticides, metabolites, and other compounds of agrochemical and environmental interest), 4. Hydrophobicity, metabolism, and data transfer studies, 5. Books and earlier reviews on pesticide TLC, 6. Selected chromatographic systems for the analysis of pesticides of various classes (70 references).

Chinese J. Pharm. (Zhongguo Yaoxue Zazhi) 34 (11), 780-781 (1999). A comparison of the China Pharmacopoeia with USP, BP, and JP, involving discussion of the status and trends of present Pharmacopoeia, the possibility of international cooperation in their edition, stressing on Chinese traditional medicine and its quality standards and TLC is, in particular, emphasized in identification of traditional medicine in various pharmacopoeia.

J. Liq. Chrom. Rel. Technol. 27, 1377-1411 (2004). The review includes 117 recent references regarding modern and efficient TLC methods like: gradient elution (GE) TLC, automated multiple development (AMD), and over-pressured layer chromatography (OPLC). Detailed discussions are included about the mobile phase optimization by the “Prisma” method and other mathematical models. The analysis and quantification by photodensitometry of flavonoids, coumarins, saponins, alkaloids, and other classes of compounds include detailed experimental conditions, stationary and mobile phase, development methods and quantitative determination by densitometric procedures.

Thieme Medical Publishers Inc., New York (2006). This book presents the theoretical and technical information needed to perform reliable and reproducible high-performance thin-layer chromatography (HPTLC) to establish the identity, purity, quality, and stability of raw materials, extracts, and finished botanical products. The text provides a complete overview of the techniques and common applications of HPTLC in herbal analysis. Chapters covered are theoretical concepts (stationary phase, mobile phase, TLC results, densitometry), practical aspects of modern TLC (sample preparation, selecting the stationary phase, sample application, chromatogram development, derivatization, documentation, reporting and record keeping, TLC software, standardization), typical applications in herbal analysis, method development, and validation of qualitative and quantitative HPTLC methods.

(Thin-layer chromatography in pharmacies.) Wissenschaftliche Verlagsges. mbH, Stuttgart, ISBN 3-8047-1387-4 (1995). TLC procedures for 171 pharmaceuticals, drugs and preparations including coloured chromatograms; 450 pages, DIN-A-4-size, serial edition.

J. Planar Chromatogr. 20, 399-406 (2007). General aspects of food analysis using planar chromatography as an optimum tool for national and international standards to keep analysis economical. Contents: 1. The changing situation as a challenge; 2. TLC and HPTLC applications in food analysis and rapidly growing topics; 2.1 Topics in the past twenty years; 2.2 Rapidly growing topics in the future; 3. Is HPTLC a reliable quantitative method in food analysis; 3.3 Performance key data; 3.2 Method comparison; 3.3 Separating power; 4. Obstacles and benefits of planar chromatography; 4.1 Obstacles; 4.2 Benefits; 5. Future potential of HPTLC in food analysis; 5.1 Simplified sample preparation; 5.2 Simultaneous determination of analytes with different detection principles or analytes difficult to detect in general; 5.3 Digital evaluation of plate images; 5.4 Bioactivity-based detection; 5.5 Mass-selective information on demand; 5.6 Cost-effectiveness; 6. Conclusions. Planar chromatography for simple solution of difficult problems, reduced sample preparation, selective derivatization, quantitative and sensitive determinations using appropriate instrumentation, compliance with regulated environments, e. g. cGMP and cGLP, validation fulfilling requirements for reliable analysis, reduced costs, high throughput and comparable results.

Trends Anal. Chem. 76, 60-70 (2016). The review discusses suitable analytical approaches for the analysis of counterfeit and substandard pharmaceuticals in Tanzania. The authors highlight the importance of TLC and HPTLC for the quality control of pharmaceuticals in developing countries, having a repeatability and a reproducibility of the results comparable to those obtained with HPLC.