Tag: M.W=250-300

Lee, Zhong-Han published the artcileEffect of the Steric Hindrance and Branched Substituents on Visible Phenylamine Oxime Ester Photoinitiators: Photopolymerization Kinetics Investigation through Photo-DSC Experiments, Computed Properties of 15625-89-5, the publication is Photochemistry and Photobiology (2022), 98(4), 773-782, database is CAplus and MEDLINE.

In this work, free radical photopolymerization (FRP) kinetics for series of different phenylamine oxime ester structures (DMA-P, DEA-P, DMA-M, TP-2P, TP-2M and TP-3M) was investigated. Steric hindrance and branched substituents were prepared to realize the corresponding electronic and photopolymerization effects. The photophys., electrochem., thermal properties and radical concentration were investigated by UV-visible spectroscopy, cyclic voltammetry (CV), thermogravimetric anal. (TGA), differential scanning calorimetry (DSC) and ESR (EPR). Furthermore, the structure-reactivity relationships were also studied in detail through photo-DSC experiment We demonstrate that the introduction of alkyl chains and/or numbers of oxime esters affects significantly the photoreactivity. Under the same weight ratio of formulation and irradiated condition, TP-3M containing three oxime esters in its structure and Me group in the periphery exhibits the highest double-bond conversion efficiency. TP-3M-based formulation also shows a wide operation window under different contents and light intensities. Importantly, the photoreactivity of the TP-3M-based system was found to be better than the com. photoinitiator (OXE-01) under LED@405 nm at a low concentration This work could provide some significance to the design of oxime esters with enhanced photoreactivity.

Photochemistry and Photobiology published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Computed Properties of 15625-89-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Wang, Yao published the artcileMacrophage-targeting gene silencing orchestrates myocardial microenvironment remodeling toward the anti-inflammatory treatment of ischemia-reperfusion (IR) injury, Safety of Trimethylolpropane triacrylate, the publication is Bioactive Materials (2022), 320-333, database is CAplus and MEDLINE.

Ischemia-reperfusion (IR) injury represents a major cause of myocardial dysfunction after infarction and thrombolytic therapy, and it is closely related to the free radical explosion and overwhelming inflammatory responses. Herein, macrophage-targeting nanocomplexes (NCs) are developed to mediate efficient co-delivery of siRNA against MOF (siMOF) and microRNA-21 (miR21) into myocardial macrophages, cooperatively orchestrating the myocardial microenvironment against IR injury. Bioreducible, branched poly(β-amino ester) (BPAE-SS) is designed to co-condense siMOF and miR21 into NCs in a multivalency-reinforced approach, and they are surface-decorated with carboxylated mannan (Man-COOH) to shield the pos. surface charges and enhance the serum stability. The final MBSsm NCs are efficiently internalized by myocardial macrophages after systemic administration, wherein BPAE-SS is degraded into small segments by intracellular glutathione to promote the siMOF/miR21 release, finally provoking efficient gene silencing. Thus, cardiomyocyte protection and macrophage modulation are realized via the combined effects of ROS scavenging, inflammation inhibition, and autophagy attenuation, which ameliorates the myocardial microenvironment and restores the cardiac function via pos. cellular crosstalk. This study renders promising solutions to address the multiple systemic barriers against in vivo nucleic acid delivery, and it also offers new options for IR injury by manipulating multiple reciprocal bio-reactions.

Bioactive Materials published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C13H13N, Safety of Trimethylolpropane triacrylate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Dittrich, Torsten published the artcileSynthesis of 5-oxyquinoline derivatives for reversal of multidrug resistance, Application In Synthesis of 115314-17-5, the publication is Beilstein Journal of Organic Chemistry (2012), 1700-1704, database is CAplus and MEDLINE.

The inhibition of ABC (ATP binding cassette) transporters is considered a powerful tool to reverse multidrug resistance. (αR)-4-[(1Aα,6α,10bα)-1,1-Difluoro-1,1a,6,10b-tetrahydrodibenzo[a,e]cyclopropa[c]cyclohepten-6-yl]-α-[(5-quinolinyloxy)methyl]-1-piperazineethanol (Zosuquidar) featuring a difluorocyclopropyl-annulated dibenzosuberyl moiety has been found to be an inhibitor of the P-glycoprotein, one of the best-studied multidrug efflux pumps. Twelve 5-oxyisoquinoline derivatives, which are analogs of Zosuquidar wherein the dibenzosuberyl-piperazine moiety is replaced by either a diarylaminopiperidine or a piperidone-derived acetal or thioacetal group, have been synthesized as pure enantiomers. Their inhibitory power has been evaluated for the bacterial multidrug-resistance ABC transporter LmrCD and fungal Pdr5. Four of the newly synthesized compounds reduced the transport activity to a higher degree than Zosuquidar, being up to fourfold more efficient than the lead compound in the case of LmrCD and about two times better for Pdr5. The title compounds thus formed included a quinoline piperidineethanol derivative (I) and related substances. The synthesis of the target compounds was achieved using 5-[(2R)-2-oxiranylmethoxy]quinoline as a key intermediate.

Beilstein Journal of Organic Chemistry published new progress about 115314-17-5. 115314-17-5 belongs to esters-buliding-blocks, auxiliary class Epoxides,Chiral,Nitro Compound,Sulfonate,Benzene, name is (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, and the molecular formula is C9H9NO6S, Application In Synthesis of 115314-17-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Xue, Fei published the artcileAsymmetric Synthesis of Axially Chiral 2-Aminobiaryls by Rhodium-Catalyzed Benzannulation of 1-Arylalkynes with 2-(Cyanomethyl)phenylboronates, Product Details of C15H21BO4, the publication is Angewandte Chemie, International Edition (2018), 57(32), 10368-10372, database is CAplus and MEDLINE.

In the presence of [RhCl(coe)]₂ and nonracemic bicyclooctadienecarboxamide I, internal aryl alkynes such as 1-(1-propynyl)naphthalene with ortho-substituted aryl moieties underwent regioselective and enantioselective cyclization reactions with o-(pinacolboronato)phenylacetonitriles mediated by K₃PO₄ in aqueous 1,4-dioxane to yield nonracemic biarylamines such as binaphthylamine II with stereogenic axes in 72-97% ee (all but one compound formed in >90% ee).

Angewandte Chemie, International Edition published new progress about 956229-86-0. 956229-86-0 belongs to esters-buliding-blocks, auxiliary class Boronic acid and ester,Benzene,Ester,Boronate Esters,Boronic acid and ester, name is Methyl 2-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate, and the molecular formula is C20H17FO4S, Product Details of C15H21BO4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kim, Young Been published the artcileCamouflage coating using photochromic microcapsules and epoxy resin, Formula: C15H20O6, the publication is Polymer (Korea) (2022), 46(2), 288-294, database is CAplus.

Using photochromism of a diarylethene, we demontrate an easy but highly effective coating method for a camouflage application. The photochromic ink is consisting of capsule type of photochromic pigments and UV curable epoxy resin, reversibly presenting colored pattern in response to UV light. The transmittance of the coatings was investigated based on concentrations of the photochromic microcapsules, we have found that 5 weight% of the microcapsules in epoxy resin is most appropriate for camouflage with background. Besides, in order to increase mech. stability of the coating, thin protective layer including acrylate chems. is further coated on the patterns. By taking advantage of bar-coating with various mask pattern, different patterns were successfully coated on various types of surfaces such as wood, glass, general concrete wall and even curved surfaces. Based on the coating method, camouflage application for an encryption quick response (QR) pattern was successfully demonstrated.

Polymer (Korea) published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Formula: C15H20O6.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Gemborys, Mark W. published the artcileSynthesis of N-hydroxyacetaminophen, a postulated toxic metabolite of acetaminophen, and its phenolic sulfate conjugate, Quality Control of 6217-68-1, the publication is Journal of Medicinal Chemistry (1978), 21(7), 649-52, database is CAplus and MEDLINE.

The synthesis of N-hydroxyacetaminophen (I) [63975-21-3], a postulated toxic metabolite of acetaminophen, and its phenolic sulfate conjugate II [66682-85-7] is described. K p-nitrophenyl sulfate [6217-68-1] was reduced, acetylated, and treated with sulfatase to give I. I was moderately unstable at physiol. pH and temperature, but II was stable.

Journal of Medicinal Chemistry published new progress about 6217-68-1. 6217-68-1 belongs to esters-buliding-blocks, auxiliary class Salt,Nitro Compound,Sulfonate,Benzene, name is Potassium 4-nitrophenyl sulfate, and the molecular formula is C6H4KNO6S, Quality Control of 6217-68-1.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Bonini, C. published the artcileSynthesis and biological evaluation of new simple indolic non peptidic HIV Protease inhibitors: The effect of different substitution patterns, Name: (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, the publication is Bioorganic & Medicinal Chemistry (2014), 22(17), 4792-4802, database is CAplus and MEDLINE.

New structurally simple indolic non peptidic HIV Protease inhibitors were synthesized from (S)-glycidol by regioselective methods. Following the concept of targeting the protein backbone, different substitution patterns were introduced onto the common stereo-defined isopropanolamine core modifying the type of functional group on the indole, the position of the functional group on the indole and the type of the nitrogen containing group (sulfonamides or perhydroisoquinoline), alternatively. The systematic study on in vitro inhibition activity of such compounds confirmed the general beneficial effect of the 5-indolyl substituents in presence of arylsulfonamide moieties, which furnished activities in the micromolar range. Preliminary docking anal. allowed to identify several key features of the binding mode of such compounds to the protease.

Bioorganic & Medicinal Chemistry published new progress about 115314-17-5. 115314-17-5 belongs to esters-buliding-blocks, auxiliary class Epoxides,Chiral,Nitro Compound,Sulfonate,Benzene, name is (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate, and the molecular formula is C9H9NO6S, Name: (R)-Oxiran-2-ylmethyl 3-nitrobenzenesulfonate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Kim, Jeehwan published the artcileEffect of dispersants on structural integrity of 3D printed ceramics, Quality Control of 15625-89-5, the publication is International Journal of Applied Ceramic Technology (2022), 19(2), 968-978, database is CAplus.

Ceramic 3D printing based on stereolithog. is an excellent alternative to overcome drawbacks of conventional subtractive manufacturing for 3D shape control. Optimization of photocurable ceramic slurry is one of the most essential conditions to achieve favorable 3D printed structures using SL. Homogeneity of ceramic particle dispersion in photocurable resin is particularly important to optimize ceramic suspension. Dispersant plays a significant role in increasing homogeneity. Dispersant in photocurable ceramic resin has an addnl. effect on photocurability and integrity of 3D printed green body. We herein discuss how dispersants influence 3D printing conditions based on stereolithog. using various com. available dispersants of BYK series such as BYK103, BYK111, BYK180, BYK182, and BYK2001. Both BYK111 and BYK180 showed better performances than others because of their lower volatilities under general temperature condition during a printing process. Both solubility and decomposition temperature of dispersants largely influenced the structural quality after washing and debinding processes. This study provides worthy information to design photocurable ceramic suspension for various types of ceramic materials.

International Journal of Applied Ceramic Technology published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Quality Control of 15625-89-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Pawale, Tejal published the artcileSynergistic self-assembly of rod-like monomers in blue phase liquid crystals for tunable optical properties, SDS of cas: 15625-89-5, the publication is Journal of Materials Chemistry C: Materials for Optical and Electronic Devices, database is CAplus.

The three-dimensional nanostructures of blue phase liquid crystals (BPLCs) are becoming the spotlight of soft matter research in electro-optic devices, sensors, photonic crystals, and 3D lasers. The polymerization of the blue phase system overcomes the inherent thermal instability and paves the way for broadening the application of blue phases. Prior to polymerization, a fundamental understanding of the synergistic self-assembly behavior of monomers in the BP lattice can provide insights not only into the soft crystal growth and crystal transformations but also into the tunability of their optical properties. Here, we controlled the reactive monomer content in the BPs to observe the stability of BPI and BPII with different lattice dimensions before polymerization The self-assembly behavior of com. available rod-like mesogenic monomers in BP lattices with different monomer compositions was investigated under a homogeneous hybrid cell and directed self-assembly approach. The revealed synergistic self-assembly mechanism of the mesogenic monomer in BPs provides the ability to tune the photonic band gap of BP soft crystals.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, SDS of cas: 15625-89-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Yang, Tonghui published the artcileEnhanced crosslinking of polypropylene in γ-irradiation via copper(II) doping, Quality Control of 15625-89-5, the publication is Radiation Physics and Chemistry (2022), 110042, database is CAplus.

Crosslinked polypropylene (PP) has a greater application prospect due to its excellent properties, hence, how to improve the crosslinking of PP is significant. In our research, the effects of γ-irradiation on the crosslinking of PP blended with copper(II) acetate monohydrate were investigated. Firstly, PP was melt-blended with a crosslinking agent (1,2-Polybutadiene (PB) or Trimethylolpropane triacrylate (TMPTA)) and copper(II) acetate monohydrate in a twin-screw extruder, then treated with various γ-irradiation dose. The influence of copper(II) content and radiation dose on crosslinking of PP was characterized by gel content, melt flow index measurement (MFI), rheol. anal. measurement, differential scanning calorimetry, and thermogravimetric anal. The results of gel content, MFI, and Rheol. anal. indicated that the copper(II) could enhance the crosslinking of both PP/PB and PP/TMPTA at all ranges of radiation dose, more particularly, the enhanced effect was much prominent at low radiation dose, and of which is more obvious in the latter system. The crosslinking effect based on the mechanism of copper(II) catalysis enhanced was also discussed, which is assumed as the promotion of free radical production during irradiation processing. In addition, the copper(II) would also enhance the thermal stability of the γ-irradiation treated PP/PB and PP/TMPTA blends, and decrease the crystallinity and the m.p. This paper provided a novel method to increase the irradiated crosslinking of PP at a lower irradiation dose, which was expected to expand its application field.

Radiation Physics and Chemistry published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C39H35N5O8, Quality Control of 15625-89-5.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics