Results 91 to 100 of about 1,079,697 (312)

60 MHz 1H NMR spectroscopy for the analysis of edible oils

Trends in analytical chemistry : TRAC, 2014
Highlights • We present the first results from a new 60 MHz 1H NMR bench-top spectrometer.• Using chemometrics, we detected hazelnut oil adulteration of olive oil at 11.2%w/w.• Bench-top 60 MHz NMR performs at least as well as FTIR for this type of ...
T. Parker, E. Limer, Andrew D. Watson, M. Defernez, David C. Williamson, E. K. Kemsley   +5 more
semanticscholar   +1 more source

Design and Synthesis of Peptide‐Polyester Conjugates for Cell‐Mediated Scaffold Degradation

Advanced Healthcare Materials, EarlyView.
This work describes polycaprolactone (PCL)‐based biomaterials engineered to degrade in response to cell‐secreted proteases. A fast‐degrading peptide (Fast) sequence is integrated into a PCL conjugate backbone to produce a biomaterial that is selectively degraded by multiple cell types compared to its scrambled control (ScrFast).
Korina Vida G. Sinad, Natasha K. Hunt, Srujan Singh, Kelly B. Seims, Yingjie Wu, E. Thomas Pashuck, Warren L. Grayson, Lesley W. Chow   +7 more
wiley   +1 more source

1H-NMR Profile of Glycosaminoglycans in Human Urine

Analytical Sciences, 1994
A study was performed on human urinary glycosaminoglycans (GAGs) by one- and two-dimensional 500MHz proton nuclear magnetic resonance (1H-NMR) spectroscopy. Urinary GAGs were separated by the precipitation methods with hexadecyl pyridinium and with 85% ethanol, and purified by the β-elimination reaction in alkaline medium containing sodium borohydride ...
TOIDA, Toshihiko, KAKINUMA, Naoto, TOYODA, Hidenao, IMANARI, Toshio   +3 more
openaire   +2 more sources

Importance of Purity Evaluation and the Potential of Quantitative 1H NMR as a Purity Assay

Journal of Medicinal Chemistry, 2014
In any biomedical and chemical context, a truthful description of chemical constitution requires coverage of both structure and purity. This qualification affects all drug molecules, regardless of development stage (early discovery to approved drug) and ...
G. Pauli, Shao‐Nong Chen, C. Simmler, D. Lankin, T. Gödecke, B. Jaki, J. Friesen, J. McAlpine, J. Napolitano   +8 more
semanticscholar   +1 more source

Integrated Visible Light and Oxidant Protection Through Multifunctional Sunscreens

Advanced Healthcare Materials, EarlyView.
High‐energy visible radiation (HEVR), although less energetic than UV light, penetrates deeper into the skin and contributes to photoaging, pigmentation disorders, and oxidative stress. The development of new HEVR‐targeted filters, therefore, represents not only a scientific challenge but also a pressing public health and cosmetic industry need.
Beatriz Peñín, Raúl Losantos, Ignacio Funes‐Ardoiz, Diego Sampedro   +3 more
wiley   +1 more source

Discovery and Structural Characterization of Impurities in the Synthesis of Darolutamide Intermediate

Chinese Journal of Magnetic Resonance
Darolutamide is an important drug for the treatment of prostate cancer. When studying its synthesis process, three impurities A, B, and C were discovered and purified in the first step of Suzuki coupling and the second step of hydrolysis deprotection ...
MA Huifang, TONG Yue, WANG Rongfan, XIE Jianwei   +3 more
doaj   +1 more source

5-Chloro-4-iodo-1,3-dimethyl-1H-pyrazole

Molbank, 2009
Reaction of 5-chloro-1,3-dimethyl-1H-pyrazole with I2/HIO3 in refluxing acetic acid gives the title compound in good yield. Detailed spectroscopic data (1H NMR, 13C NMR, 15N NMR, IR, MS) are presented.
Gytė Vilkauskaitė, Gernot A. Eller, Algirdas Šačkus, Wolfgang Holzer   +3 more
doaj   +1 more source

A Systematic Study of GelMA‐Carbopol Bioinks for High‐Fidelity Extrusion 3D Bioprinting at Physiological Temperatures

Advanced Healthcare Materials, EarlyView.
Gonzalez Martinez and collaborators develop a strategy to formulate high performance GelMA‐based bioinks with low solids contents. The resulting bioinks enable 3D bioprinting at 37 °C of high‐fidelity structures with tunable mechanical properties that support high cell viability and function.
David A. González‐Martínez, Aidee V. Arizpe Tafoya, Eduardo González‐Martínez, Mabel Barreiro Carpio, Laura Daniela Serrano Andrade, Christopher T. N. Chow, Mohammadhossein Dabaghi, Jeremy A. Hirota, Jose M. Moran‐Mirabal   +8 more
wiley   +1 more source

Comparison of 19F and 1H NMR spectroscopy with conventional methods for the detection of extra virgin olive oil adulteration

Grasas y Aceites, 2018
This paper reports the comparison of determination methods for extra virgin olive oil (EVOO) adulteration with two kinds of oils, refined olive oil (ROO) and soybean oil by 19FNMR, 1H NMR and chemical titration.
X. Y. Jiang, C. Li, Q. Q. Chen, X. C. Weng   +3 more
doaj   +1 more source

Natural Biomaterials for Osteochondral Repair: From Source to Strategy

Advanced Healthcare Materials, EarlyView.
Biological origin‐guided overview of natural biomaterials and therapeutic strategies for osteochondral tissue engineering. The circular diagram categorizes representative materials and strategies into plant/algae‐derived, microbial‐derived, animal‐derived, and human‐derived sources, centered on an osteochondral defect repair model.
Hengyu Liu, Hanyang Zhang, Wenbo Yang, Hao Chen, Jincheng Wang, Fei Chang   +5 more
wiley   +1 more source