Densitometric Thin-Layer Chromatography of Protease Inhibitors in Pharmaceutical Preparations

JPC – Journal of Planar Chromatography – Modern TLC -     

Some Technical Problems Associated with Temperature-Controlled Thin-Layer Chromatography

JPC – Journal of Planar Chromatography – Modern TLC -     

Recycled X-Ray Films as an Alternative Support for Thin-Layer Chromatography Plates

JPC – Journal of Planar Chromatography – Modern TLC -     

Identification and Quantification of Tocopherols in Vegetable Oils by Thin-Layer Chromatography

JPC – Journal of Planar Chromatography – Modern TLC -     

Investigation of the Separation of Higher Fatty Acid Methyl Esters by Reversed-Phase HPTLC

JPC – Journal of Planar Chromatography – Modern TLC - Separations of eight methyl esters of higher fatty acids on RP-18 stationary phase with methanol—water and...     

Application of Liquid-Liquid Microextraction-High-Performance Thin-Layer Chromatography for Preconcentration and Determination of Phenolic Compounds in Aqueous Samples

JPC – Journal of Planar Chromatography – Modern TLC - A novel liquid-phase microextraction method coupled with high-performance thin-layer chromatography (HPTLC) for preconcentration,...     

Development and Validation of a Planar Chromatographic Method with Reflectance Scanning Densitometry for Quantitative Analysis of Anastrozole in the Bulk Material and in Tablet Formulations

JPC – Journal of Planar Chromatography – Modern TLC - A new quantitative densitometric HPTLC method has been developed for analysis and determination of the stability of anastrozole,...     

Planar Chromatography of Cholic Acid-Derived cis—trans Isomeric bis-Steroidal Tetraoxanes

JPC – Journal of Planar Chromatography – Modern TLC - Seven pairs of cis—trans isomers of bis-steroidal tetraoxanes have been examined by both normal-phase (NP) and reversed-phase...     

Development of a Validated Stability-Indicating High-Performance Thin-Layer Chromatographic Method for the Quantification of Levetiracetam

JPC – Journal of Planar Chromatography – Modern TLC - Levetiracetam (LT) is an FDA-approved orally active anticonvulsant drug. A high-performance thin-layer chromatographic (HPTLC)...     

Densitometric HPTLC Analysis of the 5-Hydroxymethylfurfural Content of Turkish Fruit Wines and Vinegars

JPC – Journal of Planar Chromatography – Modern TLC - A thin-layer chromatographic method with densitometric UV detection at 286 nm after ethyl acetate extraction is described for...     

A Simple and Reliable HPTLC Method for the Determination of Four Marker Components in the Quality Control of Alstonia scholaris

JPC – Journal of Planar Chromatography – Modern TLC - A new, simple, reliable, and validated high-performance thin-layer chromatographic (HPTLC) method has been developed for the...     

The Effect of Diapause on Neutral Lipids in the Pitcher-Plant Mosquito Wyeomyia smithii as Determined by HPTLC-Densitometry

JPC – Journal of Planar Chromatography – Modern TLC - Diapause in insects typically results in metabolic adjustments that may include the levels of feeding and activity, metabolic rate,...     

Determination of Catechin and Epicatechin in an Extract from Uncaria tomentosa Bark by TLC with Chemically Modified Stationary Phases

JPC – Journal of Planar Chromatography – Modern TLC - The conditions used for TLC and HPTLC analysis of catechins have been optimized. Chemically modified stationary phases (HPTLC CN,...     

Planar Dielectrochromatography on Non-Wetted Thin Layers

JPC – Journal of Planar Chromatography – Modern TLC - Some of the physical properties of dielectric liquids are influenced by electric fields. Interesting results were obtained in this...     

Quantification and Isolation of Plumbagin (Plumbago zeylanica Linn.) by High-Performance Thin-Layer Chromatography

JPC – Journal of Planar Chromatography – Modern TLC - A simple, rapid, selective, and quantitative high-performance thinlayer chromatographic (HPTLC) method has been developed for the...     

Determination of the Antioxidant Activity of Juices by Thin-Layer Chromatography

JPC – Journal of Planar Chromatography – Modern TLC - The discovery of the implication of free radicals in the etiology of many diseases has led to increased interest in functional food...     

New Approach to Mechanism of Action of Paclitaxel by Means of BioArena Studies

JPC – Journal of Planar Chromatography – Modern TLC - The accumulation of hydrogen peroxide (H2O2) is an early and crucial step in paclitaxel-induced cancer cell death before commitment...     

Bicymantrenyl chemistry

Planar chiral 2- and 3-bicymantrenylcarbaldehydes can be resolved to enantiomers through Schiff's bases with (S)-(−)-α-phenylethylamine. Optically active derivatives of bicymantrenyl with Me and CH₂OH substituents were synthesized from (−)-3-bicymantrenylcarbaldehyde. The absolute configuration of Schiff's base obtained from (+)-3-bicymantrenylcarbaldehyde was determined by X-ray diffraction analysis. For Part 3, see Ref. 1. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 158–162, January, 1997.     

Synthesis of planar chiral ferrocene alcohols as potential dendrimer cores

Planar chiral compounds, 1-hydroxymethyl-2-methylferrocene and new 3-(2-hydroxymethylferrocenyl)propanol, were synthesized to be used as dendrimer cores. The ethers of these compounds, namely, 1-(benzyloxymethyl)-2-methylferrocene and 2-(benzyloxymethyl)-1-(benzyloxypropyl)ferrocene, can be regarded as zero-generation Freche type dendrimers. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1116–1119, July, 2006.     

Development of solid–oxide fuel cell for reduced operating temperatures

A technique for formation of electrolyte thin films with the thickness of 6–10 μm of zirconia stabilized by yttria (YSZ) is developed on the basis of the method of chemical deposition from the vapor phase of organometallic compounds (MOCVD). Planar electrochemical cells based on film electrolyte with a supporting anode with the working surface area of 12 cm² were manufactured. A solid-oxide fuel cell (SOFC) based on two fuel cells was developed and its life cycle tests at reduced operating temperatures (<800°C) were carried out for 400 h. The maximum power density reached in the SOFC tests was 316 mW/cm².