A novel phosphorus-containing triazine oligomer poly(2-morpholinyl-4-penta-erythritol phosphate-1,3,5-triazine) (PMPT) was synthesized as a kind of tri-component intumescent flame retardant (IFR). The chemical structure of PMPT was characterized by FTIR, 1H-NMR and 31P-NMR, and the mechanical and flammability properties of FR-PP were measured. The FTIR results showed that the expected chemical ...

In this study, we combined different physico-chemical methods to show the effect of overheating on the quality of golden fry cooking oil. Those methods include spectroscopic methods such us 1H-NMR, 13C-NMR and FTIR. Results showed that both overheating and excessive reuse of golden fry cooking oil seriously affected its quality by increasing its density, viscosity and different indexes like ref...

Acetylation with acetic anhydride of methyl 5-amino-1H-[1,2,4]triazole-3-carboxylate, one of the hetareneamino acids, was studied using HPLC, H NMR, FTIR and GC-MS. The compound has a significantly decreased susceptibility to acetylation compared to 5-amino-1H-[1,2,4]triazole itself. Two isomeric diacetylated products were found.

N,N-dioctyl-azepanium, -piperidinium and -pyrrolidinium bromides 1-3, have been obtained and characterized by FTIR and NMR spectroscopy. DFT calculations have also been carried out. The optimized bond lengths, bond angles and torsion angles calculated by B3LYP/6-31G(d,p) approach have been presented. Both FTIR and Raman spectra of 1-3 are consistent with the calculated structures in the gas pha...

The most common means of identification of gamma-hydroxybutyrate (NaGHB) involves using Fourier transform infrared spectroscopy (FTIR) or gas chromatography-mass spectrometry (GC-MS) of a suitable derivative. However, these methods may be complicated by possible shifts in chemical equilibrium between gamma-hydroxybutyric acid (GHB), GHB salts and the precursor lactone, gamma-butyrolactone (GBL)...

Pyrazolines are biologically and pharmaceutically very active scaffolds. Derivatives of. (3,5-diphenyl-4,5-dihydro-1H-pyrazol-1-yl)(phenyl)methanone were synthesized by the cyclization of chalcones (1a-c) with substituted benzyl hydrazides (2a-e) using a few drops of piperidine as catalyst. Structures of all the synthesized compounds were confirmed by FTIR, 1H NMR, 13C NMR and mass spectrometri...

A 2,4-dimethyl-1H-chromeno[4',3':4,5]pyrido[2,3-d]pyrimidine-1,3,7(2H,4H)-trione 3 was synthesized via a one-pot procedure. Its structure was established on the basis of FTIR, 1H NMR, 13C NMR, DEPT, COSY, HSQC, MS data and elemental analysis. The new compound was assayed for antiproliferative/cytotoxic effects in a panel of human tumor cell lines after 72 h exposure. MTT-dye reduction assay was...

The textural, structural, morphological, and acidic properties of TiO2/Al-ZSM-12 zeolite synthesized viathe hydrothermal method using methyltriethylammonium chloride as a template were studied in this study. structure, size, shape the crystallites, acidity materials investigated detail following methods: XRD, low-temperature nitrogen adsorption–desorption, XRF, FTIR, Raman spectroscopy, DRS UV–...

The purpose of this work is the synthesis new isonicotinic acid hydrazones, study their structure, reactivity and biological screening some synthesized compounds. reactions leading to N-arylidene(alkylidene) hydrazones via condensation hydrazide with various derivatives aromatic aldehydes were studied. structure functionally substituted was established by FTIR, 1H 13C NMR, two-dimensional COSY ...

Submit Manuscript | http://medcraveonline.com Abbreviations: EC50: Half Maximal Effective Concentration; MIC: Minimum Inhibitory Concentration; TLC: Thin-Layer Chromatography; PTLC: Preparative Thin Layer Chromatography; FTIR: Fourier Transform Infrared Spectroscopy; HRMS E: High-Resolution Mass Spectrometer Electron Ionization; 1H NMR; Proton Nuclear Magnetic Resonance; 13C NMR; Carbon Nuclear...