Month: October 2022

Li, Guangli; Li, Junjie; Li, Qing published the artcile< Biodegradable MnO2 nanosheet mediated hybridization chain reaction for imaging of human apurinic/apyrimidinic endonuclease 1 activity in living cells>, Related Products of 112-63-0, the main research area is apurinic apyrimidinic endonuclease manganese dioxide nanosheet biodegradable.

A highly sensitive enzyme-free amplification assay for the detection of apurinic/apyrimidinic endonuclease 1 activity was developed. By incorporating biodegradable MnO2 nanosheets, in situ light up intracellular APE 1 activity was achieved.

Nanoscale published new progress about Biodegradability. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Cui, Jiawen; Zhou, Qin; Yu, Meijin; Liu, Yuhao; Teng, Xiaohua; Gu, Xianhong published the artcile< 4-tert-butylphenol triggers common carp hepatocytes ferroptosis via oxidative stress, iron overload, SLC7A11/GSH/GPX4 axis, and ATF4/HSPA5/GPX4 axis>, Recommanded Product: Ethyl 3-amino-4-(cyclohexylamino)benzoate, the main research area is Cyprinus hepatocyte ferroptosis oxidative stress iron 4tertbutylphenol SLC7A11 pollution; 4-tert-butylphenol; Environmental pollutant; Ferrostatin-1; Iron homeostasis; ROS.

4-Tert-butylphenol (4-tBP) is a toxic environmental pollutant with moderate bioaccumulation, environmental persistence, and long-term toxicity. Its toxicity to aquatic organisms has become an issue of concern. However, the mol. mechanism of 4-tBP toxicity to aquatic organisms remained unclear. Liver is a target organ for environmental pollutants. Here, we established 4-tBP-exposed toxicity model in vivo and primary hepatocyte model in vitro in common carp (Cyprinus carpio L.). We found increased hepatic-somatic index (HSI) and abnormal serum biochem. indexes (ALT, AST, and LDH) after 4-tBP exposure, indicating liver damage. We further revealed that 4-tBP damaged the structural integrity of the livers with typical features of ferroptosis. Based on toxicogenomics anal., we found ferroptosis is likely to be involved in the mechanism of 4-tBP-induced liver damage. Moreover, our in vivo and in vitro experiment provided evidences that 4-tBP-exposure led to excess oxidative stress, iron overload, decreased MMP, and abnormal expression of ferroptosis-related factors. Interestingly, ferrostatin-1 (Fer-1, a ferroptosis inhibitor) pretreatment alleviated above changes. In summary, we demonstrated that 4-tBP triggered hepatocytes ferroptosis via oxidative stress, iron overload, SLC7A11/GSH/GPX4 axis, and ATF4/HSPA5/GPX4 axis. For the first time, we discovered that Fer-1 can ameliorate the toxicity of 4-tBP, which needs more investigations. Our results provided a scientific basis of mol. mechanism of 4-tBP-induced fish poisoning.

Ecotoxicology and Environmental Safety published new progress about Activating transcription factor 4 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 347174-05-4 belongs to class esters-buliding-blocks, and the molecular formula is C15H22N2O2, Recommanded Product: Ethyl 3-amino-4-(cyclohexylamino)benzoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Pholsrimuang, Priyagorn; Ngernchuklin, Piyalak; Chaiyasat, Preeyaporn published the artcile< Preparation of high performance copolymer microcapsule encapsulated heat storage material without supercooling>, Name: 2-Ethyl-2-((methacryloyloxy)methyl)propane-1,3-diyl bis(2-methylacrylate), the main research area is methyl methacrylate copolymer microcapsule heat storage material supercooling.

The Me methacrylate (MMA)-based copolymer microcapsules encapsulating Rubitherm27 (RT27) used as a phase change material were successfully prepared by microsuspension polymerization The influence of three types of crosslinked comonomers such as ethylene glycol dimethacrylate), trimethylolpropane trimethacrylate, and divinylbenzene (DVB) on the microcapsule formation was studied at various ratios of MMA:crosslinked comonomer. It was found that using MMA:DVB at 70:30 wt% was the optimum ratio. The obtained microcapsules were nonspherical in shape with a dent and high shell strength. In addition, the latent heats of melting and crystallization of the encapsulated RT27 were about 140 J/g-RT27 which were close to those of the original RT27. However, the crystallization temperatures (Tc) of the encapsulated RT27 (14°C) were lower than that of the original RT27 (25°C) which was called supercooling. To prevent supercooling, the effect of nucleating agents (emulgen 150, 1-octadecanol, and RT58) on decreasing supercooling of the encapsulated RT27 was investigated. The results clearly presented that the addition of at least 5 wt% of RT58 significantly increased Tc (25°C) of the encapsulated RT27, whereas the observed latent heats were pretty close to original RT27.

Polymer-Plastics Technology and Materials published new progress about Encapsulation. 3290-92-4 belongs to class esters-buliding-blocks, and the molecular formula is C18H26O6, Name: 2-Ethyl-2-((methacryloyloxy)methyl)propane-1,3-diyl bis(2-methylacrylate).

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kim, Min Kyoung; Park, Geonha; Hong, Seon-Pyo; Jang, Young Pyo published the artcile< Analytical quality by design methodology approach for simultaneous quantitation of paeoniflorin and decursin in herbal medicine by RP-HPLC analysis>, Electric Literature of 112-63-0, the main research area is paeoniflorin decursin herbal medicine RPHPLC quantitation.

Simultaneous quantification of multiple marker compounds in herbal medicine by high performance liquid chromatog. (HPLC) anal. is still a challenge due to the complexity in various parameters to be considered and co-existing multi-components. As a case study, a reliable HPLC method for simultaneous quantification of paeoniflorin from Paeoniae Radix and decursin from Angelicae Gigantis Radix in various com. herbal medicine was developed based on anal. quality by design (AQbD) strategy. As a first step, risk assessment was performed to select the critical method parameters (CMPs) which were decided as organic mobile phase ratio and column oven temperature In order to evaluate the effect of the CMPs on critical method attributes (CMAs) of peak resolution and tailing, central composite design (CCD) was employed. The final chromatog. conditions were optimized as follows: column- C18, 4.6 x 250 mm, 5μm particle size; mobile phase- A: acetonitrile, B: 0.1% acetic acid water; detection wavelength- 235 nm for paeoniflorin, 325 nm for decursin; column oven temperature- 25°C; flow rate- 1.0 mL/min; gradient mobile phase system as Time (min): % A, 0:14, 25:14, 30:50, 60:50, 61:100, 65:100, 66:14, 75:14. The method was successfully validated according to the International Conference on Harmonization (ICH) guidelines and piloted for ten com. herbal medicines.

Natural Product Sciences published new progress about Particle size. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kourakis, Stephanie; Timpani, Cara A.; de Haan, Judy B.; Gueven, Nuri; Fischer, Dirk; Rybalka, Emma published the artcile< Dimethyl fumarate and its esters: a drug with broad clinical utility?>, Quality Control of 112-63-0, the main research area is review dimethyl fumarate ester antioxidative antiinflammatory inflammation oxidative stress; Nrf2; clinical application; dimethyl fumarate; disease; fumaric acid esters; inflammation; oxidative stress.

A review. Fumaric acid esters (FAEs) are small mols. with anti-oxidative, anti-inflammatory and immune-modulating effects. Di-Me fumarate (DMF) is the best characterized FAE and is approved and registered for the treatment of psoriasis and Relapsing-Remitting Multiple Sclerosis (RRMS). Psoriasis and RRMS share an immune-mediated etiol., driven by severe inflammation and oxidative stress. DMF, as well as monomethyl fumarate and diroximel fumarate, are commonly prescribed first-line agents with favorable safety and efficacy profiles. The potential benefits of FAEs against other diseases that appear pathogenically different but share the pathologies of oxidative stress and inflammation are currently investigated.

Pharmaceuticals published new progress about Anti-inflammatory agents. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

More, Swati S.; Vince, Robert published the artcile< Design, synthesis and biological evaluation of glutathione peptidomimetics as components of anti-Parkinson prodrugs>, Application of C12H24N2O4, the main research area is glutathione peptidomimetic synthesis antiParkinson prodrug uptake blood brain barrier; peptide drug design antiParkinson prodrug CNS plasma disulfide bond; glucitol doramine oxidation regioselective epoxide opening peptide coupling adamantine.

Plethoras of CNS-active drugs fail to effect their pharmacol. response due to their in vivo inability to cross the blood-brain barrier (BBB). The classical prodrug approach to overcome this frailty involves lipophilic derivatives of the polar drug, but we herein report a novel approach by which endogenous transporters at BBB are exploited for brain drug delivery. The crucial role played by glutathione in pathogenesis of Parkinson’s and the presence of its influx transporters at the basolateral membrane of BBB served as the basis for our anti-Parkinson prodrug design strategy. A metabolically stable analog [I, R1 = adamantamine or (II)] of glutathione is used as a carrier for delivery of dopamine and adamantamine. An account of successful syntheses of these prodrugs along with their transport characteristics and stability determination is discussed.

Journal of Medicinal Chemistry published new progress about Antiparkinsonian agents. 77215-54-4 belongs to class esters-buliding-blocks, and the molecular formula is C12H24N2O4, Application of C12H24N2O4.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bezkrovnaya, O. N.; Pritula, I. M.; Puzikov, V. M.; Maslov, V. V.; Kolybaeva, M. I.; Gurkalenko, Yu. A.; Vovk, O. M.; Lopin, A. V.; Plaksii, A. G. published the artcile< SiO2 based active media with incorporated molecules of rhodamines and pyrenetetrasulfonic acid>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is rhodamine pyrenetetrasulfonic acid tetrasodium salt silica medium optical property.

SiO2-matrixes with incorporated mols. of fluorescent dyes are synthesized by a sol-gel method. Transparency of the samples depends on the molar ratio of water and formamide. The influence of silica gel matrix on the appearance of excimer fluorescence of 1, 3, 6, 8-pyrenetetrasulfonic acid tetra-sodium salt is studied. The lasing-action threshold of SiO2-matrix with rhodamine 6G is determined The lasing peak of rhodamine 6G in SiO2-matrix is 575.7 nm; the half-width equals 2.2 nm.

Nanosistemi, Nanomateriali, Nanotekhnologii published new progress about Annealing. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Pliss, E. M.; Soloviev, M. E.; Loshadkin, D. V.; Molodochkina, S. V.; Kasaikina, O. T. published the artcile< Kinetic model of polyunsaturated fatty acids oxidation in micelles>, Related Products of 112-63-0, the main research area is fatty acid micelle oxidation kinetics mechanism; Kinetic modeling; Micelles; Oxidation of PUFAs; Radical intermediates.

A kinetic model of polyunsaturated fatty acids (PUFAs) radical chain oxidation in micelles is presented, taking into account the diffusion of active intermediates between aqueous and organic phases, and its effect on the detailed mechanism of the process. The model made it possible to indirectly involve the structural changes of micelles and their kinetic characteristics by varying the actual values of the reactions rate constants The modeling results are in good agreement with exptl. data for the oxidation of Me linoleate and linoleic acid.

Chemistry and Physics of Lipids published new progress about Chain reaction mechanism (oxidation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Boger, Dale L.; Fink, Brian E.; Hedrick, Michael P. published the artcile< Total Synthesis of Distamycin A and 2640 Analogs: A Solution-Phase Combinatorial Approach to the Discovery of New, Bioactive DNA Binding Agents and Development of a Rapid, High-Throughput Screen for Determining Relative DNA Binding Affinity or DNA Binding Sequence Selectivity>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is combinatorial library distamycin A analog binding DNA.

The development of a solution-phase synthesis of distamycin A and its extension to the preparation of 2640 analogs are described. Thus, solution-phase synthesis techniques with reaction workup and purification employing acid/base liquid-liquid extractions were used in the multistep preparation of distamycin A (8 steps, 40% overall yield) and a prototypical library of 2640 analogs providing intermediates and final products that are ≥95% pure on conventional reaction scales. The complementary development of a simple, rapid, and high-throughput screen for DNA binding affinity based on the loss of fluorescence derived from displacement of prebound ethidium bromide is disclosed which is applicable for assessing relative or absolute binding affinity to DNA homopolymers or specific sequences (hairpin oligonucleotides). Using hairpin oligonucleotides, this method permits the screening of a library of compounds against a single predefined sequence to identify high affinity binders, or the screening of a single compound against a full library of individual hairpin oligonucleotides to define its sequence selectivity. The combination permits the establishment of the complete DNA binding profile of each member of a library of compounds Screening the prototypical library provided compounds that are 1000 times more potent than distamycin A in cytotoxic assays (I, Boc = tert-butoxycarbonyl; IC50 = 29 nM, L1210), that bind to poly[dA]-poly[dT] with comparable affinity, and that exhibit an altered DNA binding sequence selectivity. Several candidates were identified which bound the five-base-pair AT-rich site of the PSA-ARE-3 sequence, and one (II, R = 4-dimethylaminobutyryl; K = 3.2 × 106 M-1) maintained the high affinity binding (K = 4.5 × 106 M-1) to the ARE-consensus sequence containing a GC base-pair interrupted five-base-pair AT-rich site suitable for inhibition of gene transcription initiated by hormone insensitive androgen receptor dimerization and DNA binding characteristic of therapeutic resistant prostate cancer.

Journal of the American Chemical Society published new progress about Combinatorial library. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Cain, Gary A.; Christos, Thomas E.; Johnson, Alexander L.; Pottorf, Richard S.; Confalone, Pat N.; Tam, S. William; Schmidt, William K. published the artcile< Neurotensin receptor binding and antinociceptive activity for lipophilic Nα-amido neurotensin(9-13) analogs>, Synthetic Route of 112-63-0, the main research area is lipophilic acyl neurotensin pentapeptide analog; receptor neurotensin binding pentapeptide analog; antinociceptive lipophilic acyl neurotensin pentapeptide analog.

Lipophilic Nα-acyl neurotensin(9-13) analogs RCO-X-Pro-Tyr-Ile-Leu-OH [RCO = Me3CO2C (Boc), Ac, Bz, tert-BuCO, tert-BuCH2CO, 1-AdCO, n-C7H15CO, n-C17H35CO, bicyclo[2.2.1]heptane-2-acetyl, bicyclo[3.3.0]octane-2-carbonyl, biotinyl, 4-tert-BuPhCO, 3-pyridylcarbonyl, 4-PhC6H4CO, X = Lys; RCO = Boc, 1-AdCO, X = Orn] were prepared These acylated pentapeptides exhibited good neurotensin receptor binding, as well as in vivo analgesic activity via i.c.v. and even i.v. routes of administration.

Bioorganic & Medicinal Chemistry Letters published new progress about Analgesics. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics