Millimeter wave spectrum and search for vinyl isocyanate toward Sgr B2(N) with ALMA [PDF]
A&A 666, A50 (2022), 2022 The interstellar detections of isocyanic acid, methyl isocyanate, and very recently also ethyl isocyanate, open the question of the possible detection of vinyl isocyanate in the interstellar medium. The aim of this study is to extend the laboratory rotational spectrum of vinyl isocyanate into the millimeter wave region and to undertake a check for its ...
arxiv +1 more source
First detection of C$_2$H$_5$NCO in the ISM and search of other isocyanates towards the G+0.693-0.027 molecular cloud [PDF]
A&A 654, L1 (2021), 2021 Little is known about the chemistry of isocyanates (compounds with the functional group R-N=C=O) in the interstellar medium, as only four of them have been detected so far: isocyanate radical (NCO), isocyanic acid (HNCO), N-protonated isocyanic acid (H$_2$NCO$^+$) and methyl isocyanate (CH$_3$NCO).
arxiv +1 more source
Synthesis and biological evaluation of novel urea and thiourea derivatives of valacyclovir [PDF]
Journal of the Serbian Chemical Society, 2014 A series of novel urea and thiourea derivatives of valacyclovir were efficiently synthesized in high yields and evaluated their antiviral activity.
Katla Ramana Venkata +4 more
doaj +1 more source
Isocyanic acid (HNCO) in the Hot Molecular Core G331.512-0.103: Observations and Chemical Modelling [PDF]
, 2021 Isocyanic acid (HNCO) is a simple molecule with a potential to form prebiotic and complex organic species. Using a spectral survey collected with the Atacama Pathfinder EXperiment (APEX), in this work we report the detection of 42 transitions of HNCO in the hot molecular core/outflow G331.512-0.103 (hereafter G331).
arxiv +1 more source
The ALMA-PILS survey: Detection of CH$_{3}$NCO toward the low-mass protostar IRAS 16293-2422 and laboratory constraints on its formation [PDF]
Mon. Not. R. Astron. Soc. 469 (2017) 2219-2229, 2017 Methyl isocyanate (CH$_{3}$NCO) belongs to a select group of interstellar molecules considered to be relevant precursors in the formation of larger organic compounds, including those with peptide bonds. The molecule has only been detected in a couple of high-mass protostars and potentially on comets.
arxiv +1 more source
ChemCatChem, Volume 15, Issue 1, January 9, 2023., 2023 Carbocatalysis: The synthesized basic carbocatalyst showed high performance in two different base‐catalyzed reactions namely ϵ‐caprolactone ring‐opening polymerization to biodegradable polycaprolactone, as well as isosorbide transesterification to isosorbide bis(methyl carbonate).
Majd Al‐Naji +3 more
wiley +1 more source
Sustained Release Drug Delivery Applications of Polyurethanes
Pharmaceutics, 2018 Since their introduction over 50 years ago, polyurethanes have been applied to nearly every industry. This review describes applications of polyurethanes to the development of modified release drug delivery.
Michael B. Lowinger +3 more
doaj +1 more source
Identification of pre-biotic molecules containing Peptide-like bond in a hot molecular core, G10.47+0.03 [PDF]
The Astrophysical Journal, 895, 2, 2020, 2020 After hydrogen, oxygen, and carbon, nitrogen is one of the most chemically active species in the interstellar medium (ISM). Nitrogen bearing molecules have great importance as they are actively involved in the formation of biomolecules. Therefore, it is essential to look for nitrogen-bearing species in various astrophysical sources, specifically around
arxiv +1 more source
The Effects of Acetylated Poplar Particles on Applicational Properties of manufactured Particleboards with Isocyanate Resin [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2009 The capability of acetylated poplar particles with isocyanate resinin manufacturing particleboard was investigated. The acetylation degrees at high, medium, and zero (control) levels and type of resin (isocyanate and urea formaldehyde) were considered as
Hamideh Abdolzadeh, Kazem Doost hosseini
doaj +1 more source
Isocyanate toughened pCBT: Reactive blending and tensile properties
eXPRESS Polymer Letters, 2013 Cyclic butylene terephthalate oligomers (CBT) were reacted in a ring-opening polymerization with three types of isocyanates: a bifunctional aromatic type, a bifunctional aliphatic type and a polymeric aromatic isocyanate.
T. Abt +3 more
doaj +1 more source