نتایج جستجو برای: hydroxy

تعداد نتایج: 31232  

تحریری, مژگان , دهقانی‌اشکذری, محمود , دوسک, میکائیل , طباطبایی, ، معصومه , مهرانی, خلیل , یوسفی, محمد ,

The reaction of 2-hydroxy-3-methoxybenzaldehyde with 4-nitrosulfonylhydrazide under refluxing led to co-crystalline compound contains N'-(2-hydroxy-3-methoxy benzylidene)-4-nitro benzenesulfonylhydrazide (a sulfonamide-Schiff base compound) and 1,2-bis (2-hydroxy-3-methoxy-benzylidenehydrazine) (I). A medium strong hydrogen bonds in 1 links the oxygen atoms of one molecule of 1,2-bis(2-hydroxy-...

Journal: :Oriental journal of chemistry 2023

Quinoline based new Schiff bases were synthesized from 3-Actyl 4-Hydroxy Quinolin-2-(1H)-one and screened their antibacterial antifungal activity. The 4-hydroxy-3-(1-((4-picolin-2-yl)imino)ethyl)quinolin-2-(1H)-one(L1),4-hydroxy-3-(1-((5-picolin-2-yl)imino)ethyl)quinolin-2(1H)-one(L2),4-hydroxy-3-(1-((6-picolin-2-yl)-imino)ethyl)quinolin-2(1H)-one(L3) 4-hydroxy-3-(1-((3-nitro-4-picolin-2-yl)imi...

Journal: :international journal of marine science and engineering 2013
n. moayyeri k. saeb e. biazar

heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures which have high investment and exploitation costs. hence, it is significantly necessary ...

Journal: :Australian Journal of Chemistry 1965

Condensation and cyclization of 5-hydroxy- 1,2,4- thiadiazol-2-yl hydrazine 1 with pyruvic acid, phenacyl bromide, propargyl bromide and ally1 bromide afforded compounds 2,5,7 3, 4 ,6 and 8 respectively, Reaction of 1 with epichforohydrine afforded 4-hydroxy-N-[5-hydroxy- 1 ,3,4-thiadiazoly1] pyrazolidine 9

Alavi Shoushtari SM Belbasi A Dorostkar K Khaki A, Tabassomi M Tahmasbian H

Background: Semen cryopreservation is the most important section of artificial insemination programs; it allows preservation of semen fertility for a long time. Materials and Methods: The aim of the present study was to detect the effect of in vitro supplementation of 4-hydroxy Tempo on fresh and frozen spermatozoa quality of buffalo bulls. Five healthy buffalo bulls (5 ejaculates from each bul...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1391

چکیده: در این پروژه از واکنش متیل آنترانیلات (1) با مواد مختلف محصولات گوناگونی به عنوان ضدآفتاب سنتز شده به طوری که: از واکنش متیل آنترانیلات (1) با اپی کلروهیدرین (2) و الاستین (5) محصول (methyl 2-(2-hydroxy-3-(elastin)propylamino)benzoate (7 با بازده خوب بدست آمد. از واکنش متیل آنترانیلات (1) با آلدهید (8) و الاستین (5) مشتقات (9) سنتز گردید. r` r 9 h h a oh-2-ph h b ome-2-ph h c ph...

Journal: :Materials advances 2022

The combination of 1-hydroxy-tetrazole and 1-hydroxy-1,2,4-triazole produces a new bisheterocyclic moiety, which is characterized derivatized extensively. We tried to combine the positive advantages TKX-50 MAD-X1 backbone with this building block.

Journal: :Nucleic acids research 2001
K Fujikawa H Kamiya H Yakushiji Y Nakabeppu H Kasai

The human nucleotide pool sanitization enzyme, MTH1, hydrolyzes 2-hydroxy-dATP and 8-hydroxy-dATP in addition to 8-hydroxy-dGTP. We report here that human MTH1 is highly specific for 2-hydroxy-ATP, among the cognate ribonucleoside triphosphates. The pyrophosphatase activities for 8-hydroxy-GTP, 2-hydroxy-ATP and 8-hydroxy-ATP were measured by high-performance liquid chromatography. The kinetic ...

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