Day: November 11, 2022

Hsu, Wei-Hsiang published the artcileASIC3-dependent metabolomics profiling of serum and urine in a mouse model of fibromyalgia, Computed Properties of 104-01-8, the main research area is fibromyalgia ASIC3 metabolomics profiling biomarker.

Fibromyalgia (FM) is characterized by chronic widespread pain. Here, we probed the metabolomics profiles of serum and urine in a mouse model of FM induced by intermittent cold stress (ICS). We focused on the role of acid-sensing ion channel 3 (ASIC3) in the metabolomics profiling because ICS treatment induced chronic widespread muscle pain lasting for 1 mo in wild-type (Asic3+/+) but not Asic3-knockout (Asic3-/-) mice. Serum and urine samples were collected from both genotypes at different ICS stages, including before ICS (basal level) and post-ICS at days 10 (middle phase, P10) and 40 (recovery phase, P40). Finally, we developed an algorithm for the impactful metabolites in the FM model including cis-aconitate, kynurenate, taurine, pyroglutamic acid, pyrrolidonecarboxylic acid, and 4-methoxyphenylacetic acid in urine as well as carnitine, deoxycholic acid, lysoPC(16:0), lysoPC(20:3), oleoyl-L-carnitine, and trimethylamine N-oxide in serum. Asic3-/- mice were impaired in only muscle allodynia development but not other pain symptoms in the ICS model, so the ASIC3-dependent metabolomics changes could be useful for developing diagnostic biomarkers specific to chronic widespread muscle pain, the core symptom of FM. Further pharmacol. validations are needed to validate these metabolomics changes as potential biomarkers for FM diagnosis and/or treatment responses.

Scientific Reports published new progress about Biomarkers. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Computed Properties of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Roberts, David W. published the artcileSkin Sensitization QMM for HRIPT NOEL Data: Aldehyde Schiff-Base Domain, Synthetic Route of 1205-17-0, the main research area is skin sensitization QMM Schiff Base.

The general chem. principles underlying skin sensitization for Schiff base (SB) electrophiles may be used to develop a quant. mechanistic model (QMM), based on reactivity supplemented with a hydrophobicity parameter for some but not all structures within the SB reaction domain. For aliphatic Schiff base electrophiles, the log of the no observed effect level (NOEL) values (pNOEL) from the human repeated insult patch test (HRIPT) can be calculated by the reactivity parameter summation of sigma star values (Σσ*) and a hydrophobicity parameter (logP). Specifically, the QMM, pNOEL = 2.34(± 0.33) Σσ* + 0.19(± 0.07) logP – 2.62(± 0.22), R2 = 0.77, R2(adj) = 0.74, s = 0.20, F = 27, was developed. Not all parts of the Schiff base domain are modeled with one equation. Particularly, predicting aromatic aldehydes and ketones appears to require a sep. equation. Interestingly, the same phys. organic chem. properties originally applied to modeling the local lymph node assay potency of Schiff base electrophiles apply to human potency as represented by the HRIPT. Reg.

Chemical Research in Toxicology published new progress about Contact dermatitis. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Synthetic Route of 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Di Marcantonio, Camilla published the artcileOrganic micropollutant removal in full-scale rapid sand filters used for drinking water treatment in The Netherlands and Belgium, HPLC of Formula: 117-96-4, the main research area is micropollutant sand filters drinking water treatment; Drinking water treatment; Microbial community composition analysis; Non-target screening; Organic micropollutants; Rapid sand filtration; Transformation products.

Biol. treatment processes have the potential to remove organic micropollutants (OMPs) duringwater treatment. The OMP removal capacity of conventional drinking water treatment processes such asrapid sand filters (RSFs), however, has not been studied in detail. We investigated OMP removal and transformation product (TP) formation in seven full-scale RSFs all treating surface water, using highresoln. mass spectrometry based quant. suspect and non-target screening (NTS). Addnl.,we studied the microbial communities with 16S rRNA gene amplicon sequencing (NGS) in both influent and effluent waters as well as the filter medium, and integrated these data to comprehensively assess the processes that affect OMP removal. In the RSF influent, 9 to 30 of the 127 target OMPs were detected. Theremoval efficiencies ranged from 0 to 93%. A data-driven workflow was established to monitor TPs, basedon the combination of NTS feature intensity profiles between influent and effluent samples and the prediction of biotic TPs. The workflow identified 10 TPs, including mol. structure. Microbial community composition anal. showed similar community composition in the influent and effluent of most RSFs, but different from the filter medium, implying that specific microorganisms proliferate in the RSFs. Some of these are able to perform typical processes in water treatment such as nitrification and iron oxidation

Chemosphere published new progress about Biomass Role: POL (Pollutant), REM (Removal or Disposal), OCCU (Occurrence), PROC (Process). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, HPLC of Formula: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Courant, Thibaut published the artcileTritylium assisted iodine catalysis for the synthesis of unsymmetrical triarylmethanes, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is unsym triarylmethane preparation; diarylmethylsulfide benzene Friedel Crafts arylation tritylium iodine catalyst.

The combined Lewis acid catalytic system, generated from mol. iodine and tritylium tetrafluoroborate effectively catalyzed the Friedel-Crafts (FC) arylation of diarylmethyl sulfides providing an efficient access to various unsym. triarylmethanes, e.g., I. The addition of tritylium and iodine created a more active catalytic system to promote the cleavage of sulfidic C-S bonds.

Organic & Biomolecular Chemistry published new progress about Arylation. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Nichols, Andrew S. published the artcileSubunit Contributions to Insect Olfactory Receptor Function: Channel Block and Odorant Recognition, SDS of cas: 1205-17-0, the main research area is Drosophila olfactory receptor subunit channel block odorant recognition.

Insect olfactory receptors are heteromeric ligand-gated ion channels composed of � common subunit (Orco) and � subunit that confers odorant specificity. Little is known about how individual subunits contribute to the structure and function of the olfactory receptor complex. We expressed insect olfactory receptors in Xenopus oocytes to investigate 2 functional features, ion channel block and odorant recognition. The sensitivity of Drosophila olfactory receptors to inhibition by ruthenium red, a cation channel blocker, varied widely when different specificity subunits were present, suggesting that the specificity subunits contribute to the structure of the ion pore. Olfactory receptors formed by DmelOr35a and Orco subunits from several different species displayed highly similar odorant response profiles, suggesting that the Orco subunit does not contribute to the structure of the odorant-binding site. We further explored odorant recognition by conducting a detailed examination of the odorant specificity DmelOr67a + DmelOrco, a receptor that responds to aromatic structures. This screen identified agonists, partial agonists, and an antagonist of DmelOr67a + DmelOrco. Our findings favor specific subunit arrangements within the olfactory receptor complex and provide a preliminary odorophore for an olfactory receptor, offering a useful foundation for future exploration of insect olfactory receptor structure.

Chemical Senses published new progress about Drosophila. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, SDS of cas: 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lee, Hsiang-Chun published the artcileJNK/ATF2 Pathway Is Involved in Iodinated Contrast Media-Induced Apoptosis, Category: isoquinoline, the main research area is diatrizole iodixanol iothalamate iohexol JNK ATF2 signaling apoptosis.

Background/Aims: Notably, activating transcriptional factor 2 (ATF2), a histone-modification gene, is involved in oxidative stress-induced apoptosis. The aim of this study was to clarify the role of ATF2 in contrast media-induced nephropathy. Methods: Human embryonic kidney 293T cells were treated with four different contrast media:ionic high-osmolar diatrizoate; ionic low-osmolar iothalamate; non-ionic low-osmolar iohexol, and non-ionic iso-osmolar iodixanol. The mRNA expression of ATF2 was determined by real-time PCR. Short interfering RNA was used to knock down ATF2 mRNA expression. Phosphorylation of ATF2 was measured by Western blotting. Wistar rats were administered either diatrizoate or a normal saline injection. Apoptosis in kidney tubular cells was determined by the presence of pos. TUNEL stain. Results: Diatrizoate, iodixanol and iothalamate, but not iohexol, induced the expression of ATF2 mRNA and phosphorylation of ATF2 in 293T cells in a time-dependent manner. More apoptotic cells were in diatrizoate-treated kidney cells than in the saline injection group (p < 0.00001). Cell death was significantly increased by knockdown ATF2 expression in the presence of diatrizoate, indicating a protective role of ATF2 in contrast media-induced apoptosis. Conclusions: Differential activation of ATF2 by different contrast media provides a new insight into the mechanism and prevention of contrast-induced nephropathy. American Journal of Nephrology published new progress about Apoptosis. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Mingxue published the artcileMechanism and kinetics of ClO·-mediated degradation of aromatic compounds in aqueous solution: DFT and QSAR studies, Recommanded Product: 1,3-Dimethoxybenzene, the main research area is density functional theory degradation chlorine oxide radical wastewater treatment.

The action of ClO· is more prominent than HO· and Cl· in the advanced oxidation degradation of some pollutants. However, studies on the pollutant degradation mechanism and kinetics by ClO· are limited. In this study, 43 different kind of aromatic compounds which are important anthropogenic and natural water pollutants were selected as models to investigate their ClO· oxidation mechanism and kinetics computationally. The results showed that radical adduct formation (RAF) rather than single electron transfer (SET) reaction was prominent in ClO·-initiated reactions of aromatic compounds In subsequent reactions of the ClO-adduct, the Cl end of the -OCl moiety shifted to the benzene ring, which was the key to hydroxylation and chlorination of aromatic compounds by ClO·. The calculated ClO· initiated reaction rate constants (k·ClO) of aromatic compounds were 102-1010 M-1 s-1. ClO· was highly reactive to phenolates, anilines and alkoxy/hydroxyl aromatic compounds Upon the deprotonation of phenol to phenolate, the k·ClO value increased by 4 orders of magnitude. The k·ClO values of alkoxybenzenes were higher for compounds with shorter alkyl side chains and more alkoxy substituents. The k·ClO increased for anilines with longer alkyl side chains. The k·ClO quant. structure-activity relationships (QSARs) models were developed to predict the reactivity of ClO· to complex aromatic compounds in aquatic systems.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Density functional theory. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Recommanded Product: 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Giofre, Sabrina published the artcileEnantio- and Regioselective Palladium(II)-Catalyzed Dioxygenation of (Aza-)Alkenols, Name: 4-Methoxyphenylacetic acid, the main research area is morpholine enantioselective regioselective preparation; allyl azaalkenol oxycarbonylphenyl iodane palladium catalyst dioxygenation intamol cyclization; tetrahydro pyran enantioselective regioselective preparation; allylalkenol oxycarbonylphenyl iodane palladium catalyst dioxygenation intamol cyclization; Pd catalysis; alkene difunctionalizations; alkenols; dioxygenation; enantioselectivity; hypervalent iodine.

An oxidative Pd-catalyzed intra-intermol. dioxygenation of (aza-)alkenols were reported, with total regioselectivity. To study the stereoselectivity, different chiral ligands as well as different hypervalent-iodine compounds was compared. In particular, by using a C-6 modified pyridinyl-oxazoline (Pyox) ligand and hypervalent iodine bearing an aromatic ring, an excellent enantio- and diastereoselectivity was achieved.

Angewandte Chemie, International Edition published new progress about Aliphatic alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Name: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xu, Jinhui published the artcileUnveiling Extreme Photoreduction Potentials of Donor-Acceptor Cyanoarenes to Access Aryl Radicals from Aryl Chlorides, Formula: C8H11NO, the main research area is aryl chloride boronate light cyanoarene photoreductive borylation catalyst; arylboronate preparation; phosphine aryl chloride light cyanoarene phosphorylation catalyst; arylphosphonium salt preparation.

Since the seminal work of Zhang in 2016, donor-acceptor cyanoarene-based fluorophores, such as 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN), have been widely applied in photoredox catalysis and used as excellent metal-free alternatives to noble metal Ir- and Ru-based photocatalysts. However, all the reported photoredox reactions involving this chromophore family are based on harnessing the energy from a single visible light photon, with a limited range of redox potentials from -1.92 to +1.79 V vs SCE. Here, we document the unprecedented discovery that this family of fluorophores can undergo consecutive photoinduced electron transfer (ConPET) to achieve very high reduction potentials. One of the newly synthesized catalysts, 2,4,5-tri(9H-carbazol-9-yl)-6-(ethyl(phenyl)amino)isophthalonitrile (3CzEPAIPN), possesses a long-lived (12.95 ns) excited radical anion form, 3CzEPAIPN�*, which can be used to activate reductively recalcitrant aryl chlorides (Ered �-1.9 to -2.9 V vs SCE) under mild conditions. The resultant aryl radicals can be engaged in synthetically valuable aromatic C-B, C-P, and C-C bond formation to furnish arylboronates, arylphosphonium salts, arylphosphonates, and spirocyclic cyclohexadienes.

Journal of the American Chemical Society published new progress about Aryl chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Formula: C8H11NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Genre, Caroline published the artcileAdditive-free selective methylation of secondary amines with formic acid over a Pd/In2O3 catalyst, Safety of 4-Methoxy-N-methylaniline, the main research area is methylamine preparation; secondary amine formic acid methylation palladium catalyst.

Formic acid is used as the sole carbon and hydrogen source in the methylation of aromatic and aliphatic amines R1NHR2 (R1 = Ph, Bn, cyclohexyl, propan-2-yl, etc.; R2 = H, Me, cyclohexyl, Ph, propan-2-yl; R1R2 = -CH2CH2OCH2CH2-) to methylamines R1N(CH3)R2. The reaction proceeds via a formylation/transfer hydrogenation pathway over a solid Pd/In2O3 catalyst without the need for any additive.

Catalysis Science & Technology published new progress about Methylation. 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Safety of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem