Results 21 to 30 of about 387,037 (310)

Development of identification test methods for triptorelin acetate and goserelin acetate substances using NMR spectroscopy

open access: yesРегуляторные исследования и экспертиза лекарственных средств, 2019
The work is a continuation of the research on the use of NMR spectroscopy in the quality control of natural peptide hormone-based active substances and their synthetic analogues.
S. V Moiseev   +2 more
doaj   +1 more source

Preparation, Structure, and Reactivity of Nonstabilized Organoiron Compounds. Implications for Iron-Catalyzed Cross Coupling Reactions [PDF]

open access: yes, 2008
A series of unprecedented organoiron complexes of the formal oxidation states −2, 0, +1, +2, and +3 is presented, which are largely devoid of stabilizing ligands and, in part, also electronically unsaturated (14-, 16-, 17- and 18-electron counts ...
Fürstner, A.   +5 more
core   +1 more source

Application of NMR Screening Methods with 19F Detection to Fluorinated Compounds Bound to Proteins

open access: yesMagnetochemistry, 2017
The combinational use of one-dimensional (1D) NMR-based screening techniques with 1H and 19F detections were applied to a human serum albumin–diflunisal complex.
Kazuo Furihata   +2 more
doaj   +1 more source

Quantitative Analysis of Cannabinoids from Cannabis sativa Using 1H-NMR

open access: yesChemical and Pharmaceutical Bulletin, 2004
A (1)H-NMR method has been developed for the quantitative analysis of pure cannabinoids and for cannabinoids present in Cannabis sativa plant material without any chromatographic purification. The experiment was performed by the analysis of singlets in the range of delta 4.0-7.0 in the (1)H-NMR spectrum, in which distinguishable signals of each ...
Hazekamp, A., Choi, Y.H., Verpoorte, R.
openaire   +4 more sources

Discovery of macrocyclic inhibitors of apurinic/apyrimidinic endonuclease 1 [PDF]

open access: yes, 2019
Apurinic/apyrimidinic endonuclease 1 (APE1) is an essential base excision repair enzyme that is upregulated in a number of cancers, contributes to resistance of tumors treated with DNA-alkylating or -oxidizing agents, and has recently been identified as ...
Beglov, Dmitri   +12 more
core   +7 more sources

1H NMR Analysis of Cerebrospinal Fluid from Alzheimer’s Disease Patients: An Example of a Possible Misinterpretation Due to Non-Adjustment of pH

open access: yesMetabolites, 2014
Two publications from the same research group reporting on the detection of new possible biomarkers for the early diagnosis of Alzheimer’s disease (AD), based on the analysis of cerebrospinal fluid samples (CSF) with 1H Nuclear Magnetic Resonance (NMR ...
Thomas Cruz   +6 more
doaj   +1 more source

Furan-PNA : a mildly inducible irreversible interstrand crosslinking system targeting single and double stranded DNA [PDF]

open access: yes, 2016
We here report on the design and synthesis of tailor-made furan-modified peptide nucleic acid (PNA) probes for covalent targeting of single stranded DNA through a crosslinking strategy.
Corradini, Roberto   +3 more
core   +2 more sources

A–C Estrogens as Potent and Selective Estrogen Receptor-Beta Agonists (SERBAs) to Enhance Memory Consolidation under Low-Estrogen Conditions [PDF]

open access: yes, 2018
Estrogen receptor-beta (ERβ) is a drug target for memory consolidation in postmenopausal women. Herein is reported a series of potent and selective ERβ agonists (SERBAs) with in vivo efficacy that are A–C estrogens, lacking the B and D estrogen rings ...
Donaldson, William A.   +12 more
core   +4 more sources

Validated 1H and 13C Nuclear Magnetic Resonance Methods for the Quantitative Determination of Glycerol in Drug Injections

open access: yesMolecules, 2018
In the current study, we employed high-resolution proton and carbon nuclear magnetic resonance spectroscopy (1H and 13C NMR) for quantitative analysis of glycerol in drug injections without any complex pre-treatment or derivatization on samples.
Jiaxi Lu   +4 more
doaj   +1 more source

Structural Elucidation of Hybutimibe

open access: yesChinese Journal of Magnetic Resonance
The structure of hybutimibe was analyzed by ultraviolet absorption spectroscopy, infrared absorption spectroscopy, mass spectrometry, nuclear magnetic resonance (1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-1H NOESY, 1H-13C HSQC and 1H-13C HMBC) spectroscopy ...
XU Xiaojie   +6 more
doaj   +1 more source

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