Results 31 to 40 of about 73,428 (238)
4-(4-Methylphenylsulfonyl)piperazin-1-ium trifluoroacetate
Acta Crystallographica Section E, 2013 In the title salt, C11H17N2O2S+·CF3COO−, the cation is protonated at the secondary piperazine N atom. The dihedral angle between the benzene ring and the piperazine mean plane is 85.54 (10)°.
S. Sreenivasa +5 more
doaj +1 more source
Complexation of norfloxacin with DNA in the presence of caffeine [PDF]
, 2006 1H NMR spectroscopy (500 MHz) has been used to quantify the complexation of the antibacterial antibiotic Norfloxacin (NOR) with DNA in the presence of Caffeine (CAF). Separate studies have been made for the self-association of NOR, its hetero-association
Davies, David B. +2 more
core +1 more source
Piperazine-2,3,5,6-tetraone [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 The mol-ecule of the title compound, C(4)H(2)N(2)O(4), is located around an inversion center and the four O atoms are in the 2,3,5,6-positions of the piperazine ring. In the crystal, bifurcated N-H⋯O hydrogen bonds link the mol-ecules into a corrugated layer parallel to (101).
Yi-Min Jiang +4 more
openaire +3 more sources
Oxidative degradation of a novel AMP/AEP blend designed for CO2 capture based on partial oxy-combustion technology [PDF]
, 2018 Versión aceptada. Embargo 24 mesesSolvent degradation and volatile compound emissions are two of the major concerns about the deployment of carbon capture technologies based on chemical absorption. In this context, partial oxy-combustion might reduce the
Cano Palacios, Mercedes +5 more
core +1 more source
Substanţele psihoactive noi şi riscurile consumului la copii şi adolescenţi [PDF]
Romanian Journal of Pediatrics, 2019 Conform definiției stabilite de Monitorul European pentru Droguri şi Toxicomanie (European Monitoring Centre for Drugs and Drug Addiction – EMCDDA), o „substanță psihoactivă nouă este considerată orice substanță narcotică sau psihotropă în formă pură sau
Viorela Nițescu
doaj +1 more source
Synthesis, biological evaluation, and SAR study of novel pyrazole analogues as inhibitors of Mycobacterium tuberculosis: Part 2. Synthesis of rigid pyrazolones [PDF]
, 2009 Two series of novel rigid pyrazolone derivatives were synthesized and evaluated as inhibitors of Mycobacterium tuberculosis (MTB), the causative agent of tuberculosis. Two of these compounds showed a high activity against MTB (MIC = 4 μg/mL).
Alessandro De Logu +19 more
core +1 more source
E-Journal of Chemistry, 2004 Novel N-substituted piperazine derivatives containing sulfonyloxy aniline moiety have been prepared. The various 4-sulfonyloxy aniline (SA) derivatives (2a-h) have been prepared by the condensation reaction of N-Acetyl Sulfanilyl chloride (ASC) and ...
H. S. Patel, H. D. Desai, H. J. Mistry
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2019 The title compounds, 2-(4-{2-[(2-oxo-2H-chromen-4-yl)oxy]acetyl}piperazin-1-yl)acetamide, C17H19N3O5, (I), and N-(2,4-dimethoxybenzyl)-2-[(2-oxo-2H-chromen-4-yl)oxy]acetamide, C20H19NO6, (II), are new coumarin derivatives.
S. Syed Abuthahir +4 more
doaj +1 more source
Foam Behaviour of an Aqueous Solution of Piperazine- N-Methyldiethanolamine (MDEA) Blend as a Function of the Type of Impurities and Concentrations [PDF]
, 2010 This study focuses on the effect of impurities in the natural gas stream on the characteristic of foam behaviour in the blended piperazine and MDEA solution.
Ismail, A. F. (Ahmad) +2 more
core +2 more sources
Crystal structure of piperazine-1,4-diium bis(4-aminobenzenesulfonate)
Acta Crystallographica Section E: Crystallographic Communications, 2015 The asymmetric unit of the title salt, C4H12N22+·2C6H6NO3S−, consists of half a piperazindiium dication, located about an inversion centre, and a 4-aminobenzenesulfonate anion. The piperazine ring adopts a chair conformation.
K. Sathesh Kumar +4 more
doaj +1 more source