Results 31 to 40 of about 1,038 (169)

The First Selenoanhydride in the Series of Chlorophyll a Derivatives, Its Stability and Photoinduced Cytotoxicity

open access: yesMolecules, 2021
In this work, we obtained the first selenium-containing chlorin with a chalcogen atom in exlocycle E. It was shown that the spectral properties were preserved in the target compound and the stability increased at two different pH values, in comparison ...
Viktor Pogorilyy   +7 more
doaj   +1 more source

Simultaneous Determination of Purpurin, Munjistin and Mollugin in Rat Plasma by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry: Application to a Pharmacokinetic Study after Oral Administration of Rubia cordifolia L. Extract

open access: yesMolecules, 2016
A specific, simple, sensitive Ultra High Performance Liquid Chromatography-tandem Mass Spectrometry (UHPLC-MS/MS) method has been developed and validated for the simultaneous determination and pharmacokinetic study of purpurin, munjistin, and mollugin in
Mingjie Gao   +7 more
doaj   +1 more source

Advances in Purpurin 18 Research: On Cancer Therapy

open access: yesApplied Sciences, 2021
How to make cancer treatment more efficient and enhance the patient’s outcome? By multimodal therapy, theranostics, or personalized medicine? These are questions asked by scientists and doctors worldwide.
Vladimíra Pavlíčková   +3 more
doaj   +1 more source

UPLC-QTOF-MS Identification of the Chemical Constituents in Rat Plasma and Urine after Oral Administration of Rubia cordifolia L. Extract

open access: yesMolecules, 2017
An effective ultra-performance liquid chromatography coupled with the quadrupole time-of-flight tandem mass spectrometry (UPLC/Q-TOF/MS) method was developed for analysing the chemical constituents in rat plasma and urine after the oral administration of
Zuoliang Zheng   +6 more
doaj   +1 more source

Identification of Dyes in Coptic Textiles from the Museum of Faculty of Archaeology, Cairo University

open access: yesHeritage, 2021
High Performance Liquid Chromatography coupled to a Diode-Array-Detector (HPLC-DAD) is used to investigate samples which were extracted from ancient Egyptian textiles (4th–5th c. AD) of the Museum of Faculty of Archaeology, Cairo University.
Ioannis Karapanagiotis   +3 more
doaj   +1 more source

Application of liquid-liquid microextraction based on deep eutectic solvent for preconcentration and spectrophotometric determination of purpurin [PDF]

open access: yesشیمی کاربردی روز
This research used a simple and efficient liquid-phase microextraction method based on deep eutectic solvents for preconcentration and spectrophotometric determination of purpurin (1, 2, and 4-trihydroxyanthraquinone) dye.
Mojtaba Fathi   +3 more
doaj   +1 more source

Antibacterial Activity of Synthesized Derivatives of Purpurin Containing Cyсlopropane and Cyclobutane Fragment

open access: yesEurasian Chemico-Technological Journal, 2020
The present study is a continuation of the scientific research works for the synthesis of anthraquinonе-containing derivatives with cyclic ring systems by the interaction of 1,2,4-trihydroxyanthraquinone (purpurin) with cyclopropanecarboxylic acid ...
Т. V. Kharlamova   +3 more
doaj   +1 more source

Synthesis and crystal structures of two purpurin derivatives: 1,4-dihydroxy-2-propoxyanthraquinone and 2-butoxy-1,4-dihydroxyanthraquinone

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The title compounds were obtained by deprotonation of 1,2,4-trihydroxyanthraquinone (purpurin) using sodium hydride followed by reaction with either 1-bromopropane or 1-bromobutane.
Eric Bosch, Emily N. McClain
doaj   +1 more source

Functional Metal Complexes for Solar–Light‐Driven Energy Conversion

open access: yesAdvanced Materials, Volume 38, Issue 22, 17 April 2026.
This review provides an exhaustive summary of the recent advancements of functional metal complexes in solar‐to‐electrical, ‐chemical, and ‐thermal energy conversion, comprising material categories, design strategies, underlying principles of operation, and identified improvement of performances.
Yanyan Qin   +3 more
wiley   +1 more source

Self‐Photosensitizing Cobalt Complexes for Photocatalytic CO2 Reduction Coupled with CH3OH Oxidation

open access: yesAngewandte Chemie, Volume 137, Issue 26, June 24, 2025.
Self‐photosensitizing non‐noble metal complexes achieve CO2 photoreduction coupled with CH3OH photooxidation, simultaneously synthesizing formic acid in the absence of any additional photosensitizers and electron sacrificial reductants. Abstract The use of metal complexes as homogeneous molecular catalysts has attracted considerable attention regarding
Ji‐Hong Zhang   +5 more
wiley   +2 more sources

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