Results 41 to 50 of about 7,079 (224)

rac-2,3-Diphenyl-2,3-dihydro-4H-pyrido[3,2-e][1,3]thiazin-4-one 1-oxide

IUCrData, 2017
In the title compound, C19H14N2O2S, the thiazine ring exhibits a screw-boat pucker. The oxygen atom on the sulfur atom of the ring is pseudo-axial on the thiazine ring.
Hemant P. Yennawar, Duncan J. Noble, Ziwei Yang, Lee J. Silverberg   +3 more
doaj   +1 more source

EFSA CEF Panel (EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids), 2013. Scientific Opinion on Flavouring Group Evaluation 93, Revision 1 (FGE.93Rev1) [PDF]

, 2013
International ...
Aeschbacher, Cramer, EFSA (European Food Safety Authority), EFSA CEF Panel (EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids), EFSA CEF Panel (EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids), EFSA CEF Panel (EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids), Florin, JECFA (Joint FAO/WHO Expert Committee on Food Additives), JECFA (Joint FAO/WHO Expert Committee on Food Additives), JECFA (Joint FAO/WHO Expert Committee on Food Additives), Lee, Longfellow, Longfellow, Mihara, Mosier, SCF (Scientific Committee for Food), Shibuya T, Tanaka, Voogd, Watters, Zeiger   +20 more
core   +2 more sources

Microfluidic Intracytoplasmic Sperm Injection (MICSI): A Novel Platform for Sperm Isolation, Selection, and Injection Into Oocytes

Andrology, EarlyView.
ABSTRACT Background Infertility is a pressing global health concern, affecting one in six couples worldwide. The failure rate for assisted reproductive technologies (ART) cycles remains at approximately 78%, with limited improvements often attributed to a lack of technological innovation.
Mehran Dabiri, Dale Mark Goss, Steven Alexander Vasilescu, Majid Ebrahimi Warkiani   +3 more
wiley   +1 more source

Crystal structure of (E)-2-benzylidene-4-[(3-phenyl-4,5-dihydroisoxazol-5-yl)methyl]-2H-benzo[b][1,4]thiazin-3(4H)-one

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, C25H20N2O2S, the dihydroisoxazole ring exhibits an envelope conformation with the methine atom being the flap, while the 1,4-thiazine ring displays a screw-boat conformation.
Nada Kheira Sebbar, Mohamed Ellouz, El Mokhtar Essassi, Mohamed Saadi, Lahcen El Ammari   +4 more
doaj   +1 more source

Investigating the Intercarbonyl X...C' (X=O/S/N) Interactions in Short Peptides and Peptidomimetics. Evidence of charge->II* Interactions. Synthesis and Characterization of Thioimidate Isostere Containing Peptidomimetics [PDF]

, 2016
This thesis entitled “Investigating the Intercarbonyl X···C′ (X = O/S/N) Interactions in Short Peptides and Peptidomimetics. Evidence of Charge→π* Interactions. Synthesis and Characterization of Thioimidate Isostere Containing Peptidomimetics” is divided
Tumminakatti, Shama
core   +1 more source

Facet‐Engineered S‐Scheme Heterostructure With Enhanced Active Sites for Efficient Photocatalytic Degradation of Organic Contaminants

Advanced Functional Materials, Volume 36, Issue 33, 23 April 2026.
The facet‐engineered ZnO/Zn3In2S6 heterostructure, dominated by {001} plane coupling, exposes abundant unsaturated Zn sites with elongated Zn─O bonds, directing photoexcited charge carriers along an S‐scheme pathway and suppressing recombination. Enhanced interfacial Zn adsorption toward bisphenol A and methylene blue further synergistically promotes ...
Yang Yang, Zisheng Du, Hongyuan Yang, Debabrata Bagchi, Ruotao Yang, Prashanth W. Menezes, Sugang Meng   +6 more
wiley   +1 more source

Methyl 2-butyl-4-hydroxy-1,1-dioxo-2H-1,2-benzothiazine-3-carboxylate

Acta Crystallographica Section E, 2012
In the title compound, C14H17NO5S, the thiazine ring adopts a half-chair conformation. The molecule exhibits an intramolecular O—H...O hydrogen bond, which forms a six-membered S(6) ring motif.
Muhammad Nadeem Arshad, Islam Ullah Khan, Muhammad Zia-ur-Rehman, Waseem Ahmed, Abdullah M. Asiri   +4 more
doaj   +1 more source

Sinteza i biološka evaluacija nekih pirimidina, pirimido[2,1-b][1,3]tiazina i tiazolo[3,2-a]pirimidin derivata [PDF]

, 2006
4,6-Diamino-1H-pyrimidine-2-thione (1) was used for the preparation of the pyrimidine derivatives 2-5. Compound 5 was cyclized to produce pyrimido[2,1-b][1,3]thiazine derivatives 6, which was condensed with p-chlorobenzaldehyde to give compound 7.
AHMED H. SHAMROUKH, AYMN E. RASHAD, HAYAM H. SAYED   +2 more
core   +1 more source

Europium‐Modified Urea‐Assisted TiO2 Nanoparticles as Multifunctional Materials for Natural Sunlight‐Driven Photocatalysis, Antimicrobial Defense, and Anticancer Activity

ChemCatChem, Volume 18, Issue 7, 14 April 2026.
This work reports, for the first time, the synergistic integration of urea‐assisted surface engineering and europium ion doping in TiO2 to achieve efficient sunlight‐driven degradation of structurally diverse azo and non‐azo dyes, coupled with enhanced antibacterial activity, supported by mechanistic validation through scavenger and GC–MS analyses ...
N. Lakshman Kumar, V. Pandiyan, T. Abisheik, Surya Chinnasamy, Annamalai Raja, Arkadeep Mukherjee, Abdullah K. Alanazi, Sivasankaran Ayyaru, Young‐Ho Ahn, Krishnakumar Balu   +9 more
wiley   +1 more source

Copper‐ and Silver‐Catalyzed Reactions of Active Methylene Isocyanides: Facile Access to Highly Substituted Five‐ and Six‐Membered Heterocycles

Chemistry – A European Journal, Volume 32, Issue 13, 1 April 2026.
This review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
Jimil George, Kyungsoo Oh
wiley   +1 more source