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Wyszukujesz frazę "Payab, Meghdad" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Use of magnetic nanoparticles in an Ionic liquid (BMIM-PF6) based vortex‐assisted dispersive liquid-liquid microextraction (VSLLME) for measuring the traces amounts of cadmium in environmental, biological and nutritional samples
Autorzy:
Payab, Meghdad
Maleki, Fatemeh Yousefnezhad
Sheikhloie, Hossein
Baghban, Ali
Powiązania:
https://bibliotekanauki.pl/articles/35505376.pdf
Data publikacji:
2023
Wydawca:
Radomskie Towarzystwo Naukowe
Tematy:
VSLLME
cadmium
vortex-assisted
heavy metal
real sample
kadm
metale ciężkie
próbka rzeczywista
Opis:
In the present project, the magnetic nanoparticles were used in a type of an ionic liquid based micro-extraction to measure trace amounts of cadmium in different real samples containing environmental water samples, saliva and human hair. In the optimum condition, the recovery percentages for the real sample were about 94.5% to 101.3%, showing the designed method is suitable to be used for analyzing the real environmental and biological samples. The main parameters were evaluated and optimized as follows: pH was 2.5, the volume of ionic liquid was 150 μl, the amount of Fe3O4 magnetic nanoparticles was 50mg, the volume of the complexing agent was 12 μl, and the vortex time was 1 min and 2 min for ionic liquid, and magnetic nanoparticle distribution steps, respectively. Also, the volume of the medium was 10 to 20 ml.
Źródło:
Scientiae Radices; 2023, 2, 4; 359-377
2956-4808
Pojawia się w:
Scientiae Radices
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A clean industrial scheme for de-ketalization of EIDD-2801 intermediate in water to give molnupiravir (MK-4482) anti-COVID-19 agent (containing its pharmaceutical analytical analysis)
Autorzy:
Siadati, Seyyed Amir
Samadi, Marjan
Soheilizad, Mehdi
Firoozpour, Loghman
Payab, Meghdad
Bagherpour, Saeid
Dindari, Bahareh
Powiązania:
https://bibliotekanauki.pl/articles/35128536.pdf
Data publikacji:
2023
Wydawca:
Radomskie Towarzystwo Naukowe
Tematy:
molnupiravir
EIDD-2801
MK-4482
clean chemistry
COVID-19
de-ketalization in water
molnupirawir
czysta chemia
deketalizacja w wodzie
Opis:
Due to the need for molnupiravir (EIDD-2801, MK-4482) anti-COVID-19 agent, in the present report, we have systematically investigated the effect of different solvents, acids (as catalyst), temperature, and other parameters which play rolls in De-ketalization process of its key intermediate. At the first glance, it might seem to be easy, but the complex nature of MK-4482 agent, and also the ultra-high purity of the crude (which is required for an active pharmaceutical ingredient (API)), make this process more complicated. As would be shown below, even a little change in the type of solvent, solvent ratio, the type or the amount of catalyst, and the temperature could directly change the reaction fate (it may lead to emergence of un-controlled impurity profile, or even it could block the reaction). However, in this work, we have been able to run this de-ketalization process only in water as the whole of the system. Here, it was observed that the high energy water molecules have been able to hydrolyze the ketal intermediate of MK-4482.
Źródło:
Scientiae Radices; 2023, 2, 2; 202-216
2956-4808
Pojawia się w:
Scientiae Radices
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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