Results 21 to 30 of about 32,010 (230)

Complexation of lithium and sodium cations with B-phosphorylate ethers, modelling terminal groups of organophosphorus podands. An experimental and theoretical study [PDF]

open access: yes, 1992
The organophosphorus compounds o-Ph2P(O)C6H4OCH3 and Ph2P(O)C2H4OCH3, which are analogs of podands' terminal groups, have been synthesized. The thermodynamic characteristics of their complexation with LiNCS and NaNCS in acetonitrile were obtained by ...
Baulin, V.E.   +5 more
core   +3 more sources

New Trends in Biosensors for Organophosphorus Pesticides

open access: yesSensors, 2001
Biosensors are sensitive and can be used as disposable sensors for environmental control. These biosensors are based either on inhibition of acyl cholinesterases acetylcholinesterase or butyrylcholinesterase) by organophosphorus compounds or on ...
Nicole Jaffrezic-Renault
doaj   +1 more source

Metabolism of profenofos to 4-bromo-2-chlorophenol, a specific and sensitive exposure biomarker. [PDF]

open access: yes, 2013
Profenofos is a direct acting phosphorothioate organophosphorus (OP) pesticide capable of inhibiting β-esterases such as acetylcholinesterase, butyrylcholinesterase, and carboxylesterase.
Chi, Lai-Har   +8 more
core   +1 more source

Atmospheric pressure gas chromatography-time-of-flight-mass spectrometry (APGC-ToF-MS) for the determination of regulated and emerging contaminants in aqueous samples after stir bar sorptive extraction (SBSE) [PDF]

open access: yes, 2014
This work presents the development, optimization and validation of a multi-residue method for the simultaneous determination of 102 contaminants, including fragrances, UV filters, repellents, endocrine disruptors, biocides, polycyclic aromatic ...
Arbulu   +38 more
core   +2 more sources

Probing Coherent Vibrations of Organic Phosphonate Radical Cations with Femtosecond Time-Resolved Mass Spectrometry [PDF]

open access: yes, 2019
Organic phosphates and phosphonates are present in a number of cellular components that can be damaged by exposure to ionizing radiation. This work reports femtosecond time-resolved mass spectrometry (FTRMS) studies of three organic phosphonate radical ...
Ampadu Boateng, Derrick   +2 more
core   +3 more sources

Lipase-Catalyzed Phospha-Michael Addition Reactions under Mild Conditions

open access: yesMolecules, 2022
Organophosphorus compounds are the core structure of many active natural products. The synthesis of these compounds is generally achieved by metal catalysis requiring specifically functionalized substrates or harsh conditions.
Yuelin Xu   +7 more
doaj   +1 more source

Chemical weapon in the 20th and 21st centuries. Part 3. Organophosphorus chemical warfare agents used until the year 1970. V-group [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2020
The article contains the knowledge about the V-group of organophosphorus chemical warfare agents, named nerve agents, used since their discovery until the year 1970.
Marcin Kloske, Zygfryd Witkiewicz
doaj   +1 more source

A theoretical quantum study of the electronic properties of mentoxy dichloro phosphorous (C10H19OPCl2) [PDF]

open access: yes, 2018
Indexación: Scopus.A theoretical quantum study of the organophosphorus compound with formula C10H19OPCl2 (MEPCL2) was carried out. The results of the calculations show excellent agreement between experimental and computed frequencies evaluated at the ...
Candia, L.G.   +5 more
core   +2 more sources

A sweet emergency due to bitter poisoning—A case report

open access: yesJournal of Family Medicine and Primary Care, 2023
Organophosphorus compounds (OPC) are major components of pesticides and nerve gas agents. Self-harm by ingestion of OPC pesticides is one of the common problems encountered in the emergency room (ER), especially in developing countries such as India.
Jenny Joseph   +3 more
doaj   +1 more source

Homolytic substitution at phosphorus for C–P bond formation in organic synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2013
Organophosphorus compounds are important in organic chemistry. This review article covers emerging, powerful synthetic approaches to organophosphorus compounds by homolytic substitution at phosphorus with a carbon-centered radical. Phosphination reagents
Hideki Yorimitsu
doaj   +1 more source

Home - About - Disclaimer - Privacy