Metabonomics and other "omics" fields are essential science in analytical chemistry. Modern analytical instruments such as proton nuclear magnetic resonance ((1)H NMR) can be provided the great quantity of analytical information. In order to assign unknown samples, chemometrics methods recognition build classification model based on experimental data. Firstly some current strategies for regardi...

Schiff's bases are one of the important classes ligands, which obtained by condensation amine and aromatic aldehyde. The metal complexes widely considered because they show excellent biological activities. Such as antimicrobial, antitumor, antibacterial, anti-fungal properties. present studies deal with synthesis characterization base transition synthesized from general formula (ML) M=Co(II) Cu...

4-chloromethyl styrene (cms) was copolymerized with different monomers such as methyl methacrylate (mma), methyl acrylate (ma), 2-ethylhexyl acrylate (eha) by free radical polymerization method at 70 ±1°c using a,a'-azobis(isobutyronitrile) (aibn) as an initiator. the copolymer compositions were obtained using related 1hnmr spectra and the polydispersity of the copolymers were determined using ...

the reaction between trimethylamine with propargyl bromide was studied and the structure of triethyl propargyl ammonium bromide was illustrated by 1hnmr, ir, and mass spectra.

Equilibrium constants of Cadmium Oxide (CdO) nanoparticles complexes in human cancer cells with DNA/RNA ligands have been studied with biospectroscopic methods such as 1HNMR, 13CNMR, 31PNMR, Attenuated Total Reflectance Fourier Transform Infrared (ATR–FTIR) and FT–Raman spectroscopies in cosolvent systems at 10, 20, 30°C ± 0.5 and 1 mol.dm–3 ionic strength, was maintained using Sodium Chloride ...

A series of Pyrano[2,3-d]Pyrimidine derivatives were synthesis using Knoevenagel and Michael addition reaction. Investigation of antimicrobial properties were done against gram positive bacteria Staphylococcus(NCTC-7447),Bacillus cereus(ATCC-14579) and gram negative bacteria Serratia maresens(IMRU-70), Proteus merabitis (NTCC-289) using Ampicillin as standard drugs. These synthesized compounds ...

Synthesis of Some Benzimidazole derivatives 4'-(5, 6-substitued-2-trifluoromethylbenzoimidazol-1-ylmethyl)-biphenyl-2-carboxylic acid were synthesized by condensation of various steps with different o-Phenylenediamine was condensed with in propylene glycol was added trifluoroacetic acid in the presence of BF3•OEt2 as catalysis. Elemental analysis, IR, 1HNMR and mass spectral data confirmed the ...

Cheilanthes grisea Blanford, a rare fern of Kumaun hills, is a member of psinopteridaceae family of leptosporangiate group of ferns. Aq. methanolic extract (50%) of this fern was screened for antifungal activity by thin layer autobiochromatographic methods. Chemical investigation of the fern fronds of C. grisea Blanford revealed the presence of a flavonol glycoside, quercetin-3-O-β-glycosyl (1→...

Flavones and chromanones are known to be biologically important compounds over 4000 chemically unique flavanoids have been identified in plant sources. These low-molecular-weight substances, found in all vascular plants, with an assortment of basic structure of phenyl benzopyrones (phenyl chromones). In the present work 2-hydroxy pyrimidine and 2-mercapto pyrimidine were prepared from phenol i....