She was most known for her research which utilized the then newly developed technique of ultraviolet spectroscopy to study hydantoins. (wikipedia.org)
Second method is first order derivative spectroscopy by solving simultaneous equation, 309.0 nm (for CEF) and 227.5 nm (for ERD) were selected for the analysis. (ajrconline.org)
Catal's reagent is characterized by spectroscopic methods such as fourier-transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), ultraviolet (UV)-visible spectrophotometry. (arel.edu.tr)
Among the most important are atomic absorption spectrophotometry in all its forms, ICP emission spectrometry, and ICP mass spectroscopy, ion chromatography, gas and liquid chromatography, ultraviolet and visible absorption spectrophotometry, voltammetry, and spectrofluorimetry. (mediaworldcomedy.org)
Absorption4
As a result the spectrophotometric methods are classified in Absorption Spectrophotometry, corresponds to the absorption of specific radiation and light spectra, and in the visible range of Ultraviolet Spectrophotometry that covers the reflectance of spectra in the range of wavelengths from 195 to 400 nm. (kalstein.co.in)
The assay for N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide was carried out by absorption spectrophotometry in the alcohol solution at the wavelength of 282 nm with the absorption index 631. (uran.ua)
Hirayama, K. (1967) Handbook of Ultraviolet and Visible Absorption Spectra of Organic Compounds. (photochemcad.com)
Láng, L. (1972) Absorption Spectra in the Ultraviolet and Visible Region, Vol. 17 and prior volumes. (photochemcad.com)
Spectra3
The method is based on the use of the first-and second-derivatives of the ratio spectra and measurements at zero-crossing wavelengths. (innovareacademics.in)
Friedel, R. A. and M. Orchin (1951) Ultraviolet Spectra of Aromatic Compounds. (photochemcad.com)
Atlas of Protein Spectra in the Ultraviolet and Visible Regions. (photochemcad.com)
Spectrophotometric2
To develop a ratio-derivative spectrophotometric method for the simultaneous quantification of acetilsalycilic acid (ASA), acetaminophen (ACE), and caffeine (CAF) in fixed-dose combination formulations. (innovareacademics.in)
Ultraviolet Spectrophotometric Determination of Trifluoperazine. (rroij.com)
Halides1
Allylic halides [ 5 ] reacted with Fe 3 (CO) 12 in benzene to give a mixture of three products including 1,5-hexadiene derivatives [ 7 ]. (go.jp)
Determination1
The proposed UV-derivative method allows the simultaneous determination of ASA, ACE, and CAF in commercial formulations. (innovareacademics.in)
Kinetics1
Under water-saturated conditions, the EDC derivatives showed faster swelling kinetics and reached almost the same water holding capacity as the original sample after 18 days. (researchgate.net)
Amino3
These books included A Dictionary of Chemical Solubilities, Inorganic (1921), The Catalytic Oxidation of Organic Compounds in the Vapor Phase (1932) and Pyrimidines: Their Amino and Aminoxy Derivatives (1933). (wikipedia.org)
The aim of these studies has been to develop a much-needed general synthetic route to amino acids (and other amine derivatives) possessing a quaternary chiral centre alpha -to the nitrogen atom and in particular, alpha , alpha -disubstituted alpha -amino acids. (exeter.ac.uk)
The central theme of this methodology is the formation of alpha -aminoalkyl radicals from existing amino acid and alpha -amino alcohol derivatives by 1,5-hydrogen atom transfer and the subsequent trapping of these radicals with appropriate radicalphiles, thus generating quaternary centres with high efficiency and excellent stereocontrol. (exeter.ac.uk)
Ratio1
Total ion current (TIC) mode was selected for the monitoring of ions of trimethylsilyl (TMS) derivative of glimepiride with an m/z ratio of 256. (springeropen.com)
Chemical1
Scientists in these fields have instead leaned towards using chemical derivatives of graphene, which are easier to produce in huge quantities. (elgalabwater.com)
Mass2
Using liquid secondary ion and four sector tandem mass spectrometry, ultraviolet, circular dichroism, and fluorescence spectrophotometry and 32P-postlabeling, two diastereomers of N2-(2-hydroxy-1- phenylethyl)-2'-deoxyguanosine-3'-phosphate and the corresponding N- 1 substituted compounds were isolated and characterized. (cdc.gov)
Mass spectrometry analysis indicated that the N2-derivatives were formed through ring opening at the alpha position. (cdc.gov)
Analysis2
Both the R-enantiomer and the S-enantiomer of the N2-derivatives were identified through circular dichroic analysis. (cdc.gov)
Chromatic analysis was performed before and after accelerated aging through ultraviolet reflection spectrophotometry. (unesp.br)
Method2
Dissolution samples were treated with the proposed UV-derivative method and the results were compared with those obtained with a validated HPLC procedure. (innovareacademics.in)
The dissolution efficiency was used to compare dissolution profiles (HPLC vs . UV-derivative method). (innovareacademics.in)
Data1
American Petroleum Institute Research Project 44 (1984) Selected Ultraviolet Spectral Data: Thermodynamic Research Center Hydrocarbon Project. (photochemcad.com)
Light1
Vitamin D is not a vitamin or a nutrient, it is a hormone produced by the body in the skin from a photolytic reaction with ultraviolet light. (turningtides.us)
Methods2
CONCLUSIONS: Both polishing methods presented no significant difference between the values of color derivatives of resins. (unesp.br)
Characterization of prepared derivatives showed that both methodslead to formation of crosslinked humic structures. (researchgate.net)
Study2
Therefore, ultraviolet (UV) irradiation was used to study its effects on immunoreactivity of gliadin, free sulfhydryl groups, gluten, and molecular weight of wheat proteins in wheat flour and flatbread samples. (ijfsab.com)
Kumar A., Rani P., Purohit S.R., Rao P.S. Effect of ultraviolet irradiation on wheat (Triticum aestivum) flour: Study on protein modification and changes in quality attributes. (ijfsab.com)
HPLC4
Nearly all participants in a Centers for Disease Control and Prevention external quality assessment program use HPLC to measure serum retinol, but round-to-round results failing to meet acceptable criteria suggest the need to provide a straightforward stable HPLC ultraviolet (UV) method that can be adopted by these laboratories to improve performance. (nih.gov)
The results obtained by first derivative spectrophotometry were compared with HPLC and no significant difference was found. (unboundmedicine.com)
From the literature survey Paracetamol can be estimated by different analytical methods they are HPLC 1, 2, 3 , simultaneous method 4 and UV spectrophotometry 5, 6, 7 . (ijpsr.com)
13. Micellar HPLC and derivative spectrophotometric methods for the simultaneous determination of fluconazole and tinidazole in pharmaceuticals and biological fluids. (nih.gov)
Fluorescence spectrophotometry2
Using liquid secondary ion and four sector tandem mass spectrometry, ultraviolet, circular dichroism, and fluorescence spectrophotometry and 32P-postlabeling, two diastereomers of N2-(2-hydroxy-1- phenylethyl)-2'-deoxyguanosine-3'-phosphate and the corresponding N- 1 substituted compounds were isolated and characterized. (cdc.gov)
The recognition properties of the target compound L with metal ions had been investigated in CH 3 CN-H 2 O ( V ∶ V ＝1∶1) solution by the ultraviolet spectrophotometry and the fluorescence spectrophotometry. (sioc-journal.cn)
Their ultraviolet absorption spectra differed significantly from each other and wavelengths of absorption maximum and molar extinction coefficients varied with pH. (nih.gov)
A similar conclusion was drawn from the analysis of absorption spectra by means of fourth‐derivative spectrophotometry. (uba.ar)
Hirayama, K. (1967) Handbook of Ultraviolet and Visible Absorption Spectra of Organic Compounds. (photochemcad.com)
Láng, L. (1972) Absorption Spectra in the Ultraviolet and Visible Region, Vol. 17 and prior volumes. (photochemcad.com)
Imidazole derivative3
Clotrimazole, an imidazole derivative with potent antimycotic properties, is primarily utilized topically to manage fungal and dermatophyte infections of the mouth, vagina, and skin. (frontiersin.org)
An imidazole derivative that is commonly used as a topical antifungal agent. (lookformedical.com)
An imidazole derivative with a broad spectrum of antimycotic activity. (lookformedical.com)
Simultaneous3
Simultaneous determination of valsartan and hydrochlorothiazide in tablets by first-derivative ultraviolet spectrophotometry and LC. (google.com.tr)
This study describes the development and validation for the simultaneous estimation of Montelukast(MON) and Fexofenadine HCL (FEX) by the Ratio derivative UV spectroscopy method. (ajrconline.org)
Ratio derivative spectrophotometry method for simultaneous estimation of Montelukast and Fexofenadine HCl in their combined dosage form. (ajrconline.org)
Order derivative3
The first method is first- order derivative zero crossing method. (ijpsr.com)
The first order derivative absorption at 275.6 nm (zero cross point of Diclofenac) was used for Paracetamol and 242.69 nm (zero cross point of Paracetamol) for Diclofenac. (ijpsr.com)
The first order derivative spectrum was selected for the analysis of both drugs. (ijpsr.com)
Absorbance2
4. Development and comparison of high-performance liquid chromatographic methods with tandem mass spectrometric and ultraviolet absorbance detection for the determination of cyclobenzaprine in human plasma and urine. (nih.gov)
The basic scientific goal has been to utilize near infrared (NIR) spectrophotometry to detect the absorbance properties of the glucose molecule. (justia.com)
Potent1
The synthesized benzothiazepine derivatives were potent tyrosinase inhibitors, which outperformed the reference kojic acid (IC50 = 16.69 µM). (bvsalud.org)
Substances1
Carbohydrazide and its derivatives are regarded as potential pharmacologically active substances. (magiran.com)
In 1913 Hahn published her first paper, entitled Saturated δ-Ketonic Esters and their Derivatives, confirming the ring structure of hydantoins utilizing ultraviolet spectrophotometry techniques developed by her colleague Emma Perry Carr. (wikipedia.org)
Skin1
A steroid of interest both because its biosynthesis in FUNGI is a target of ANTIFUNGAL AGENTS, notably AZOLES, and because when it is present in SKIN of animals, ULTRAVIOLET RAYS break a bond to result in ERGOCALCIFEROL. (lookformedical.com)