Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Deuterated DMSO"'
Rationale: Head space gas chromatography (HS-GC) has become a widely used analytical technique for residual solvents determination in drug substances and drug products. During our method development of residual solvents by HS-GC for certain drug subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38825106a79329948916d80e257bb513
https://doi.org/10.26434/chemrxiv.14776473.v1
https://doi.org/10.26434/chemrxiv.14776473.v1
Publikováno v:
Chinese Journal of Analytical Chemistry. 45:1059-1065
A method of quantitative nuclear magnetic resonance spectroscopy (qNMR) for the determination of epigoitrin in Radix Isatidis decoction pieces was established based on solid phase extraction (SPE). The twice ultrasonic extraction method using pure wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46bd1c7444f9179c7abc92dd17606e35
https://doi.org/10.1016/s1872-2040(17)61025-9
https://doi.org/10.1016/s1872-2040(17)61025-9
Publikováno v:
Microchemical Journal. 160:105547
A novel and sensitive dispersive liquid–liquid micro-extraction (DLLME) combined with 19F quantitative nuclear magnetic resonance spectroscopy (qNMR) method was developed and validated for determination of fipronil and its metabolites in chicken eg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93138adc85b1eb3199f4f94f459894fb
https://doi.org/10.1016/j.microc.2020.105547
https://doi.org/10.1016/j.microc.2020.105547
Autor:
Zhou Qiang, Wenquan Zhu, Li Min, Jinsheng Lin, Lingyun Xu, Chen Wenbin, Xianhua Zhang, Qiangming Li, Jun Wang, Wenping Hu
Publikováno v:
Journal of Pharmaceutical and Biomedical Analysis. 188:113361
During our method development for residual formaldehyde detection in a drug substance, unusually high levels of formaldehyde were detected when using a mixed solvent of EtOH/DMSO (4:1, v/v) as sample diluent in headspace GC analysis (HS-GC). Initial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f58640beab432eb6a402e71d74e08c7a
https://doi.org/10.1016/j.jpba.2020.113361
https://doi.org/10.1016/j.jpba.2020.113361
Autor:
Olle Söderman, Artur J.M. Valente
Publikováno v:
Journal of Molecular Liquids. 295:111869
Whether cyclodextrins (CDs) self-aggregate or not in solution is an interesting and timely scientific question. Yet, we are far from a scientific consensus as regards the nature of the phenomenon. Those who are in favor of the formation of CD aggrega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fae73e90288e38ada53070a642caf62
https://doi.org/10.1016/j.molliq.2019.111869
https://doi.org/10.1016/j.molliq.2019.111869
Publikováno v:
Macromolecules. 44:4616-4622
Ring-opening polymerization behavior of a model p-cresol–aniline-based benzoxazine under various conditions was investigated in detail by 1H NMR analysis in deuterated DMSO. An improved mechanistic scheme was proposed to explain the observed experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a3eea4c424f8e9196800fc890c20cda
https://doi.org/10.1021/ma2007893
https://doi.org/10.1021/ma2007893
Autor:
Afaf R. Genady
Publikováno v:
Journal of Heterocyclic Chemistry. 47:1134-1143
An applicable strategy of chemical labeling of morphine (M) and 6-acetyl morphine (6-AM) using diazonium salts is described. M or 6-AM was coupled with aryl diazoinum salts to give morphine azo dyes. The coupling of the diazotized 4,4′-diaminostilb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a47fb1a3a9856bdedb812a79f8fbb62
https://doi.org/10.1002/jhet.436
https://doi.org/10.1002/jhet.436
Autor:
Željko J. Vitnik, Nina Todorović, Dušan Ž. Mijin, Ivan O. Juranić, Gordana S. Ušćumlić, Nataša V. Valentić
Publikováno v:
ARKIVOC-Online Journal of Organic Chemistry
Arkivoc
Arkivoc
The C-13 NMR chemical shifts of the C2 carbon atom in the heteroaromatic nuclei of seventeen 5-(3- and 4-substituted arylazo)-4,6-dimethyl-3-cyano-2-pyridones were determined in deuterated DMSO solution. For quantitative assessment of the substituent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ae79298a959aad44dedf72ea85cf795
https://doi.org/10.3998/ark.5550190.0010.d20
https://doi.org/10.3998/ark.5550190.0010.d20
Autor:
Ian D. Rae, Harold A. Scheraga
Publikováno v:
International Journal of Peptide and Protein Research. 13:304-314
The 1H and 13C spectra of four peptides, L-Phe-Val-Arg-pNA, D-Phe-Val-Arg-pNA, L-Phe-Pip-Arg-pNA and D-Phe-Pip-Arg-pNA (pNA = p-nitroaniline, Pip = pipecolic acid residue), have been examined, and deductions made about their conformation in solution.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fe6cb4df98bbe7c69aa94da7a6fad04
https://doi.org/10.1111/j.1399-3011.1979.tb01884.x
https://doi.org/10.1111/j.1399-3011.1979.tb01884.x
Publikováno v:
Journal of Molecular Structure
13C chemical shifts of the azomethine carbon atom for N-(substituted phenylmethylene)-3- and -4-aminobenzoic acids having a wide range of substituent effects, were determined in deuterated DMSO solution. Good Hammett correlations of the 13C NMR chemi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cd3feb766a82eabd2ff70db96c2ce6e
https://doi.org/10.1016/j.molstruc.2004.12.028
https://doi.org/10.1016/j.molstruc.2004.12.028