Component Detection Weighted Index of Analogy:  Similarity Recognition on Liquid Chromatographic Mass Spectral Data for the Characterization of Route/Process Specific Impurities in Pharmaceutical Tablets

2005 ◽  
Vol 77 (6) ◽  
pp. 1607-1621 ◽  
Author(s):  
Simeone Zomer ◽  
Richard G. Brereton ◽  
Jean-Claude Wolff ◽  
Christian Y. Airiau ◽  
Caroline Smallwood
Keyword(s):  
Spectral Data ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Pharmaceutical Tablets ◽  
Weighted Index ◽  
Liquid Chromatographic ◽  
Chromatographic Mass

Combined Gas-Liquid Chromatographic Mass Spectrometric Analysis of Some Commercial Aryl Phosphate Oils

1978 ◽  
Vol 61 (2) ◽  
pp. 266-271
Author(s):  
Padmakar G Deo ◽  
Philip H Howard
Keyword(s):  
Fire Retardant ◽  
Phosphate Esters ◽  
Spectrometric Analysis ◽  
Gas Liquid Chromatography ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Hydraulic Fluids ◽  
Alkyl Phenols ◽  
Liquid Chromatographic ◽  
Chromatographic Mass

Abstract Five commercial samples of synthetic aryl phosphate oils, which are widely used as fire retardant hydraulic fluids and as flame retardant plasticizers, have been analyzed by combined gas-liquid chromatography/mass spectrometry (GLC/MS). Each sample contained at least 4 isomers of aryl phosphate esters. The peaks were identified by a close examination of the mass spectral data and, wherever possible, by comparing retention times of the peaks with those of either the purchased or synthesized compounds. One aryl phosphate hydraulic fluid contained a small amount of a hydrocarbon. The results indicate that most of the aryl phosphate esters in the commercial samples were formed from phenol, cresols, xylenols, and other alkyl phenols. No free phenols could be detected in the samples analyzed.

scholarly journals Microwave Assisted Synthesis and Characterization of Schiff Base of 2-Amino Benzimidazole

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Garima Shrivastava ◽  
Manjul Shrivastava
Keyword(s):  
Schiff Base ◽  
Spectral Data ◽  
Aromatic Aldehyde ◽  
Synthesis And Characterization ◽  
Microwave Assisted Synthesis ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Microwave Assisted

New Schiff base (2-[(1H-benzimidazol-2-ylimino) methyl]-4,6- diiodophenol) was synthesized by the condensation of aryl/hetero aromatic aldehyde (3,5diiodosalicylaldehyde) with 2- amino benzimidazole under conventional and microwave conditions and characterized through IR, HNMR and Mass spectral data and CHN analysis

Phenolic Analogs of Amino Carboxylic-Acid Ligands for Tc-99m. 1. Synthesis and Characterization of N,N'-Ethylenebis[2-(-O-Hydroxyphenyl)Glycines] (Ehpg)

1987 ◽  
Vol 40 (10) ◽  
pp. 1695 ◽  
Author(s):  
JG Wilson
Keyword(s):  
Carboxylic Acid ◽  
Spectral Data ◽  
Dimethyl Ester ◽  
Synthesis And Characterization ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Amino Carboxylic Acid

Nine N,N'- ethylenebis [2-(o- hydroxyphenyl ) glycines ] ( ehpg ) have been prepared and characterized by conversion into their dimethyl ester dihydrochlorides. Their i.r ., 1H n.m.r. and f.a.b. mass spectral data are presented and discussed.

scholarly journals Isolation, and Structural Characterization of a New Hexa β-D-Glucopyranosyl Diterpene from Stevia rebaudiana

2018 ◽  
Vol 13 (4) ◽  
pp. 1934578X1801300
Author(s):  
Venkata Sai Prakash Chaturvedula ◽  
Srinivasa Rao Meneni
Keyword(s):  
Spectral Data ◽  
Structural Characterization ◽  
Stevia Rebaudiana ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Stevia Rebaudiana Bertoni

A new diterpene glycoside with six β-D-glucopyranosyl units was isolated from the extract of the leaves of Stevia rebaudiana Bertoni, which was identified as 13-[(2- O-β-D-glucopyranosyl-β-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid-[2- O-β-D-glucopyranosyl-3- O-(2- O-β-D-glucopyranosyl)-β-D-glucopyrano-syl -β-D-glucopyranosyl) ester (1) based on the extensive NMR (1H and 13C, COSY, HSQC, and HMBC) and mass spectral data as well as hydrolysis studies.

scholarly journals Synthesis and Characterization of 4-substituted-3,4-dihydro-4-(2,4- dioxopentan-3-yl)-3-phenylbenzo[e][1,3] Oxazin-2-ones

2020 ◽  
pp. 34-38
Author(s):  
Laxminarayana Eppakayala ◽  
Ravi Kumar Bommera ◽  
Sailaja Gummadelli ◽  
Thirumala Chary Maringanti
Keyword(s):  
Spectral Data ◽  
Synthesis And Characterization ◽  
Mass Spectral Data ◽  
Mass Spectral

Some substituted benzoxazine derivatives have been synthesized in simple two steps. The structures of the synthesized compounds were confirmed by NMR and Mass spectral data.

scholarly journals Green Synthetic Protocol for (E)-1-Aryl-3-(2-morpholinoquinolin- 3-yl)prop-2-en-1-ones and Their Antimicrobial Activity

2019 ◽  
Vol 31 (9) ◽  
pp. 1895-1898
Author(s):  
Relangi Siva Subrahmanyam ◽  
Venkateswara Rao Anna
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Data ◽  
1H Nmr ◽  
13C Nmr ◽  
Mass Spectral Data ◽  
In Vitro Antimicrobial Activity ◽  
Mass Spectral ◽  
Fungal Organisms

We report here an easy, efficient and green synthetic protocol for the (E)-1-aryl-3-(2-morpholinoquinolin-3-yl)prop-2-en-1-ones by the Claisen-Schmidt condensation of 2-morpholinoquinoline-3-carbaldehyde and different substituted acetophenones by using 1-butyl-3-methylimidazolium tetrafluoroborate (Bmim)BF4. The compounds were characterized by using 1H NMR, 13C NMR and mass spectral data and screened there in vitro antimicrobial activity against different bacterial and fungal organisms.

scholarly journals N-(2-(1H-Indol-3-yl)ethyl)-2-(6-methoxynaphthalen-2-yl)propanamide

Molbank ◽  
10.3390/m1187 ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. M1187
Author(s):  
Stanimir Manolov ◽  
Iliyan Ivanov ◽  
Dimitar Bojilov
Keyword(s):  
Spectral Data ◽  
13C Nmr ◽  
Title Compound ◽  
High Yield ◽  
Mass Spectral Data ◽  
Mass Spectral

The title compound was obtained in high yield in the reaction between tryptamine and naproxen. The newly synthesized naproxen derivative was fully analyzed and characterized via 1H, 13C-NMR, UV, IR, and mass spectral data.

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