Results 251 to 260 of about 3,741,215 (311)

Terahertz, infrared and Raman absorption spectra of tyrosine enantiomers and racemic compound.

Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, 2021
The application of terahertz (THz)-based techniques in biomolecule study is very promising but still in its infancy. In the present work, we employed THz time-domain spectroscopy (THz-TDS) and THz time-domain attenuated total reflection (THz-TD-ATR ...
Meidie Hu, Mingjie Tang, Huabin Wang, Mingkun Zhang, Shiping Zhu, Zhongbo Yang, Shengling Zhou, Hua Zhang, Jiao Hu, Yuansen Guo, Xiao Wei, Yunsheng Liao   +11 more
semanticscholar   +1 more source

Effects of Grinding and Humidification on the Transformation of Conglomerate to Racemic Compound in Optically Active Drugs [PDF]

The Journal of pharmacy and pharmacology, 1997
The effects of grinding and humidification on the transformation of conglomerate to racemic compound have been investigated by X-ray powder diffraction (XPD), differential scanning calorimetry (DSC) and infrared (IR) spectroscopy for leucine, norleucine,
SUJIMON PIYAROM, E. Yonemochi, T. Oguchi, Keiji. Yamamoto   +3 more
semanticscholar   +2 more sources

Separation of racemic compound by nanofibrous composite membranes with chiral selector

, 2020
A series of unique composite membranes formed from a nanoµ fibrous material with different amounts of a chiral selector was used for separation of chiral drugs.
J. Gaálová, F. Yalcinkaya, Petra Cuřínová, M. Kohout, Baturalp Yalcinkaya, M. Koštejn, J. Jirsák, I. Stibor, J. Bara, B. Bruggen, P. Izák   +10 more
semanticscholar   +1 more source

Polymorphism of Compound Existing as Both Racemic Compound Crystals and Mixed Crystals of Enantiomers

Molecular Crystals and Liquid Crystals, 1996
Rui Tamura, Nagao Azuma, Takanori Ushio   +2 more
exaly   +2 more sources

Synthesis of Racemic Brevioxime and Related Model Compounds

The Journal of Organic Chemistry, 2000
The synthesis, in racemic form, of the insect juvenile hormone inhibitor brevioxime (1) is described, as well as exploratory studies that led to the related model compounds 14 and 15a. The route to 1 involves Ag(+)-mediated coupling of the amine derived from 20 with the beta-keto thioester 32.
D L, Clive, S, Hisaindee
openaire   +2 more sources

Partially Racemic Compounds as Brushtail Possum Urinary Metabolites

Australian Journal of Chemistry, 1992
The hydroxycineole (2) and cineolic acid (3) obtained as urinary metabolites from the brushtail possum (Trichosurus vulpecula) after the ingestion of l,8-cineole (1), are partial racemates. The compounds have been examined by gas chromatographic analysis over chiral stationary phases, and by the synthesis of optically pure enantiomers.
RM Carman, KD Klika
openaire   +4 more sources

Chromatographic resolution of racemic organotin and -germanium compounds

Journal of Organometallic Chemistry, 1980
Abstract Seven racemic organotin and −germanium compounds have been partially resolved by inclusion chromatography on microcrystalline cellulose triacetate.
Gielen, Marcel, Vanden Eynde, I.
openaire   +2 more sources

Racemic compound of RNA duplexes.

, 2021
W. Rypniewski
semanticscholar   +1 more source

Bifunctional Chiral Agent Enables One-pot Spontaneous Deracemization of Racemic Compounds.

Angewandte Chemie
A novel one-pot deracemization method using a bifunctional chiral agent (BCA) is proposed for the first time to convert a racemate to the desired enantiomer.
Xin Su, Jie Sun, Jiaqiang Liu, Yaoguo Wang, Jingkang Wang, Weiwei Tang, Junbo Gong   +6 more
semanticscholar   +1 more source

Hydrodiethylstilbestrol Compounds. II. The Racemic Octahydro Compounds

Journal of the American Chemical Society, 1947
H E, UNGNADE, A, LUDUTSKY
openaire   +2 more sources