Results 131 to 140 of about 30,730 (232)

Synthesis of Au-Pd-NPs Materials and Application as Electrochemical Sensor of Hydroquinone in Cosmetics

Science and Technology Indonesia
Hydroquinone is a hazardous and toxic chemical often added to cosmetics due to bleaching properties. It is commonly analyzed in cosmetics using expensive and time-consuming instruments, showing the need for a cheap, fast, and sensitive hydroquinone ...
Riyanto, Safira Mardliyaliari, Alya Sabrina, Muhammad Ridho   +3 more
doaj   +1 more source

Selective N‐Functionalization of Pyrazoles

European Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek, Matthias Schrader, Christopher J. Teskey   +2 more
wiley   +1 more source

Diffuse Facial Leukoderma Secondary to Localized Use of Hydroquinone

Disorders of hyperpigmentation are extremely common, and hydroquinone remains one of the most common treatments for hyperpigmentation. Adverse events reported with hydroquinone use include acneiform eruptions, ochronosis, and irritant dermatitis ...
Mohammad, Tasneem F, Artz, Christina, Masood, Mavra   +2 more
core   +1 more source

Interactions of Hydroquinone Molecules in Crystal Structures: A Combined Cambridge Structural Database and DFT Study

The geometries for all hydroquinone–hydroquinone interactions in crystal structures from the Cambridge Structural Database (CSD) were analyzed, and interaction energies of all hydroquinone–hydroquinone contacts were calculated at the B2PLYP-D3BJ/def2 ...
Milan R. Milovanović, Ivana M. Stanković, Jelena P. Blagojević-Filipović, Mila B. Stojanović, Snežana D. Zarić, Stojanović, Mila B., Milovanović, Milan R., Zarić, Snežana D., Blagojević-Filipović, Jelena P., Stanković, Ivana M.   +9 more
core   +1 more source

A Study on Characterization of Hydroquinone clathrates Using the THz Time-Domain Spectroscopy [PDF]

, 2009
I have measured temperature-dependent α-hydroquinone and CH₄, CH₃(OH), CO₂ loaded β-hydroquinone clathrates up to 3THz using the THz Time-Domain Spectroscopy.
장진석
core  

Analysis of Hydroquinone in Face Whitening Cream by UV-Vis Spectrophotometry and GC-MS Spectrometry

Indonesian Journal of Chemical Research
The analytical method to determine the compound content in both food and cosmetic products must be carried out carefully to ensure the validity of the analysis results.
Karnelasatri Karnelasatri, Candra Yulius Tahya, Mahda Uli Adila, Junius Hardy, Sri Wahyu Ningsih Munthe   +4 more
doaj  

Studies on Porphyrin−Quinhydrone Complexes:  Molecular Recognition of Quinone and Hydroquinone in Solution

, 2016
Free-base and zinc(II) porphyrins bearing either one, two, or four hydroquinone entities at the meso positions are shown to bind quinones in solutions via a quinhydrone pairing mechanism.
Gollapalli R. Deviprasad (3028101), Francis D'Souza (2461549)   +1 more
core   +1 more source

KINETICS AND MECHANISM OF AERIAL OXIDATION OF HYDROQUINONE IN A DEVELOPER SOLUTION AND DETERMINATION OF DEVELOPER'S HALF-LIFE AT 20°C [PDF]

Journal of Sciences, Islamic Republic of Iran, 1995
The aerial oxidation of hydroquinone in a freshly prepared developer solution at 20°C has been studied through the measurement of concentration changes by a spectrophotometric method. The concentration of consumed hydroquinone is directly proportional to
doaj  

The Natural Product Esculetin as an Efficient Photoacid for the Visible‐Light‐Mediated Acetalization/Ketalization Reaction

ChemSusChem, Volume 19, Issue 19, 14 October 2026.
Esculetin: an efficient photoacid catalyzing acetalization/ketalization reactions. The development of photochemical protocols for the production of fine chemicals and industrially interesting products, employing sustainable catalysts under mild conditions, is of high interest.
Maria A. Theodoropoulou, E. Alexandros Routsi, Christiana Mantzourani, Olga G. Mountanea, Demeter Tzeli, Christoforos G. Kokotos, George Kokotos   +6 more
wiley   +1 more source

Broadly Accessible and Highly Active Hydrophosphination Catalysis With Simple Calcium Compounds in DMSO Solution

ChemSusChem, Volume 19, Issue 19, 14 October 2026.
Simple calcium bis(amido) compounds are exceptionally potent hydrophosphination catalysts in DMSO solution. At ambient temperature or under irradiation, this catalyst successfully engages all manner of unsaturated substrates with primary and secondary phosphines with more than 100 examples of high conversion.
Moniruzzaman Moniruzzaman, Rory Waterman
wiley   +1 more source