Category: isoquinoline

Hennebel, Tom published the artcileDehalogenation of environmental pollutants in microbial electrolysis cells with biogenic palladium nanoparticles, Application In Synthesis of 117-96-4, the main research area is microbial electrolysis cell palladium trichloroethylene dechlorination catalytic groundwater remediation.

Purpose of work Hydrodehalogenation of persistent pollutants, such as the groundwater contaminants trichloroethylene and diatrizoate, are catalyzed by biogenic Pd nanoparticles. As H2 gas supply for the dehalogenation reactions is still the limiting factor, this study examines in situ H2 production in the cathode of a microbial electrolysis cell. In a biogenic Pd nanoparticle (bio-Pd) free microbial electrolysis cell (MEC), dechlorination of trichloroethylene (TCE) with concomitant chloride and ethane formation was achieved in the cathode compartment at a removal rate of 120 g TCE m-3 total cathode compartment (TCC) day-1, applying -0.8 V with a power source. When the cathode granules were coated with 5 mg bio-Pd g-1 graphite, chloride and ethane formation increased to 151 g TCE m-3 TCC day-1 corresponding with a specific removal rate of 48 mg TCE g-1 Pd day-1. In both cases, formation of unwanted byproducts, such as vinyl chloride, was not significant. When the same setup was applied for transformation of the iodinated contrast medium diatrizoate (diaI3), reduction in a catalyst-free cathode of a MEC resulted in a removal of 48 ± 9% during the first h corresponding to 3 g diaI3 m-3 TCC day-1. Coating the cathodic graphite granules with bio-Pd enhanced the transformation resulting in a 93 ± 4% removal during the first h corresponding to 6 g diaI3 m-3 TCC day-1. These results suggest that MECs can produce H2 in a sustainable way to provide an economical interesting reactant for bio-Pd catalyzed dehalogenation reactions.

Biotechnology Letters published new progress about Catalysis. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Application In Synthesis of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Van Nevel, S. published the artcilePalladium nanoparticles produced by fermentatively grown bacteria as catalyst for diatrizoate removal with biogenic hydrogen, Formula: C11H9I3N2O4, the main research area is Citrobacter Clostridium biogenic palladium nanoparticle formation.

This study demonstrated the general applicability of fermentatively grown bacteria (Clostridium butyricum and Citrobacter braakii) to generate catalytic Pd(0) nanoparticles and biol. produced hydrogen as electron donor. A process consisting of microbial hydrogen formation and Pd nanoparticle catalysis without the need for an external electron donor was studied in dehalogenation reactions in batch tests as well as in a membrane bioreactor (MBR) using diatrizoate as model compound The results of using biogenic Pd(0) for diatrizoate dehalogenation in batch experiments and for removal of diatrizoate in an MBR are presented.

Communications in Agricultural and Applied Biological Sciences published new progress about Catalysis. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Iio, Keita published the artcileDiscovery of orexin 2 receptor selective and dual orexin receptor agonists based on the tetralin structure: Switching of receptor selectivity by chirality on the tetralin ring, Safety of 4-Methoxyphenylacetic acid, the main research area is orexin 2 receptor agonists chirality structure activity; Agonist; Diarylsulfonamide; OX1R; OX2R; Orexin; Orexin receptor; Tetraline.

A novel series of 1-amino-tetralin derivatives were designed and synthesized based on the putative binding mode of the naphthalene-type orexin receptor agonist 5 and their agonist activities against orexin receptors were evaluated. The introduction of N-methyl-(3-methoxyphenyl)acetamide unit onto the 1-amino-tetralin skeleton remarkably enhanced the potency of the agonist. The asym. synthesis of 6 revealed that (-)-6 having a (S)-1-amino-tetralin skeleton showed a OX2R selective agonist activity (EC50 = 2.69 nM for OX2R, OX1R/OX2R = 461) yet its enantiomer (R)-(+)-6 showed a potent OX1/2R dual agonist activity (EC50 = 13.5 nM for OX1R, 0.579 nM for OX2R, OX1R/OX2R = 23.3). These results suggested that upward orientation of the amide side chain against the tetralin scaffold (S-configuration) would be selective for OX2R activation, and the downward orientation (R-configuration) would be significant for dual agonist activity. To our best knowledge, there have been no reports thus far that the stereochem. of one carbon center on the agonist structure regulates the orexin receptor selectivity. Our results would provide important information for the development of OX1R selective agonists.

Bioorganic & Medicinal Chemistry Letters published new progress about Chirality. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Safety of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cemin, Paloma published the artcileChocolates with Brazilian cocoa: Tracking volatile compounds according to consumers’ preference, Computed Properties of 21834-92-4, the main research area is phenethyl acetate phenyl methyl hexenal chocolates cocoa; Acceptance; Aroma; Cocoa liquor; Preference map; Sensory acceptance.

This study aimed to evaluate the volatile compounds of chocolates made of Brazilian cocoas and statistically track them according to the products sensorial profile in order to relate them to consumers’ acceptance by preference map methodol. The intensity of the chocolate, acidity, woody, smoked, green, floral, burned, musty, and cocoa notes from chocolates produced with cocoa from different Brazilian states were analyzed by a trained panel and by 128 consumers. Samples from Cote dIvoire, which is known for its high-quality chocolate, were evaluated for comparison. Solid-phase microextraction headspace sampling/gas chromatog.-mass spectrometry was employed to evaluate the samples volatile compounds One hundred volatile compounds were identified within the samples. The results from the preference maps showed that the maximum preference was found for chocolate made of cocoa from Rondonia, Bahia, and Espirito Santo and Cote dIvoire and organic samples from Para. The ideal sample point was characterized by intense chocolate, floral, and woody notes and mild green and burned notes. The presence of furfural, 3-Me butanal, phenethyl acetate, 2-phenyl-5-methyl-2-hexenal, Me pyrazine, phenethyl acetate, 2-phenyl-5-methyl-2-hexenal, and tetra-Me pyrazine were shown to be important for consumer acceptance in the ideal product, whereas the presence of (Z)-2-heptenal and 2-pentyl furan may increase consumer rejection. 2,3-Me pyrazine, Me pyrazine, and 2,3-butanediol, which are important volatile compounds previously reported in the literature, were statistically tracked to both pos. and neg. sample attributes and must be better explored concerning consumers acceptance of chocolates.

Food Research International published new progress about Chocolate. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Computed Properties of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Aszyk, Justyna published the artcileComprehensive determination of flavouring additives and nicotine in e-cigarette refill solutions. Part I: Liquid chromatography-tandem mass spectrometry analysis, Quality Control of 21834-92-4, the main research area is electronic cigarette flavoring additive nicotine determination; Electronic cigarettes; Flavouring compounds; Liquid chromatography; Nicotine; Tandem mass spectrometry.

Liquid chromatog.-tandem mass spectrometry with electrospray ionization (HPLC-ESI-MS/MS) methods were developed for the simultaneous determination of 42 flavouring compounds and nicotine in liquids for e-cigarettes. The chromatog. separation was performed using an Ace Ultracore SuperC18 (100 × 2.1 mm, 2.5 μm) column in both acidic and alk. pH conditions to sep. all the compounds A simple “”dilute & shoot”” approach was used for the sample preparation The method validation was performed by evaluating key anal. parameters such as linearity, accuracy, selectivity, precision, limit of detection (LOD) and limit of quantification (LOQ). The calibration curves showed good linearity within the specific ranges for the investigated compounds with correlation coefficients greater than 0.990 in each case. The recovery for all the investigated compounds varied from 89% to 110%. The intra- and inter-day precision were within the acceptable limits (± 15%) at all tested concentrations The applicability of the methods was examined by analyzing 25 liquid samples from e-cigarettes com. available on the Polish market.

Journal of Chromatography A published new progress about E-liquids. 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Quality Control of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cho, Hyunkyung published the artcileIdentification of a New Chemotype of Anti-Obesity Compounds by Ensemble Screening, Related Products of isoquinoline, the main research area is pharmacophore screening piper amide oxadiazole antiobesity toxicity lipid.

Despite the increasing prevalence of overweight or obesity in the global population, most of the approved drugs for obesity are still not ideal for long-term use due to severe cardiovascular and/or neurol. side effects. Therefore, we designed a library-implemented virtual screening (VS) approach to discover new anti-obesity agents without significant toxicity. The Bayesian classification and 3D pharmacophore model for the VS process were built by using the screening results of our inhouse library of natural piper amide-like compounds, which possess a wide range of biol. activities and relatively low toxicities. The VS process identified six compounds of different classes with enhanced inhibitory activities against lipid accumulation and without toxicity. Moreover, the most active compound with an oxadiazole scaffold resulted in weight loss and improved the fatty liver condition of mice with overnutrition in animal experiments

ACS Omega published new progress about Adipocyte. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yanina, Irina Yu. published the artcileImmersion optical clearing of adipose tissue in rats: ex vivo and in vivo studies, Quality Control of 117-96-4, the main research area is diatrizoic acid dimethylsulfoxide adipose tissue; adipose tissue; diffusion coefficient; ex vivo and in vivo optical clearing; reduced scattering coefficient; refractive index.

Optical clearing (OC) of adipose tissue has not been studied enough, although it can be promising in medical applications, including surgery and cosmetol., for example, to visualize blood vessels or increase the permeability of tissues to laser beams. The main objective of this work is to develop technol. for OC of abdominal adipose tissue in vivo using hyperosmotic optical clearing agents (OCAs). The maximum OC effect (77) was observed for ex vivo rat adipose tissue samples exposed to OCA on fructose basis for 90 min. For in vivo studies, the maximum effect of OC (65) was observed when using OCA based on diatrizoic acid and dimethylsulfoxide for 120 min. Histol. anal. showed that in vivo application of OCAs may induce a limited local necrosis of fat cells. The efficiency of OC correlated with local tissue damage through cell necrosis due to accompanied cell lipolysis.

Journal of Biophotonics published new progress about Adipocyte. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Quality Control of 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wan, Zhongyu published the artcileQuantitative structure-property relationship of standard enthalpies of nitrogen oxides based on a MSR and LS-SVR algorithm predictions, Application In Synthesis of 598-50-5, the main research area is nitrogen oxide structure relation least squares support vector regression.

Quantum chem. method is used to calculate 1444 descriptors of each N oxide mol. Variables are screened by using multiple stepwise regression (MSR). The optimal 10-element regression equation is derived, its R2 = 0.934 and Q2 = 0.927. The support vector regression (SVR) model between 10 mol descriptors and standard formation enthalpy is established, and the support vector machine is optimized by using the least squares method (LS). The training set consisting of 78 compounds have R2 = 0.969 and Q2 = 0.954. The other 22 compounds constitute the test set to verify the external prediction ability of the model, and its R2 = 0.958. It demonstrates that the LS-SVR model has good stability and prediction ability, and overcomes the problem of over-fitting. The conclusion of quant. structural property relation (QSPR) shows that the mol. descriptor and the standard enthalpy of formation are nonlinear 2nd-order functions. The authors speculate that the electronegativity of atoms is the key to determine the standard enthalpy of formation of compounds

Journal of Molecular Structure published new progress about Algorithm. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Application In Synthesis of 598-50-5.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Umar, Abdullahi Bello published the artcileQSAR and Docking Studies on Some Potential Anti-Cancer Agents to Predict their Effect on M14 Melanoma Cell Line, HPLC of Formula: 1455-77-2, the main research area is melanoma cell QSAR mol docking.

Abstract: The global incidence of melanoma cancer is increasing rapidly and its metastatic form causes high mortality rates. The research report illustrates the development of a quant. structure-activity relationship (QSAR) to predict the activities (pGI50) of some anti-cancer agents on melanoma cancer cell line. Subsequently, most potent compounds that showed better pGI50 activities were selected and screened via Lipinskis rule of five for drug likeness, ADMET risk parameters and lastly docking simulation studies was performed to elucidate their binding mode. Kennard-Stone algorithm was adopted for the data division, the genetic function algorithm was employed for variable selection and multiple linear regressions method was utilized for model development. The derived QSAR model showed, resp. acceptable [R2 (0.805), R2adjusted (0.773), Qcv2 (0.754) and R2pred (0.703)]. The obtained cRP2 for Y-randomization is 0.649, and applicability-domain (A-D) was assessed via leveraged method. Among the screened compounds via Lipinskis rule of five for oral bioavailability, ADMET risk filter for drug-like features and Docking simulation studies, compound 18 and 25 were identified as the best ligands having the better interactions energies (- 150.679 kcal mol-1 and – 176.246 kcal mol-1) and showed better interactions with the receptor than vemurafenib (- 147.245 kcal mol-1). Thus, the results of this research would be helpful in identification of lead mol. and optimization of novel drug.

Chemistry Africa published new progress about Algorithm. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, HPLC of Formula: 1455-77-2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chhatwal, A. Rosie published the artcileDirect synthesis of amides from nonactivated carboxylic acids using urea as nitrogen source and Mg(NO3)2 or imidazole as catalysts, SDS of cas: 104-01-8, the main research area is urea carboxylic acid magnesium nitrate imidazole catalyst coupling; primary amide preparation; secondary amide preparation.

A new method for the direct synthesis of primary and secondary amides from carboxylic acids was described using Mg(NO3)2·6H2O or imidazole as a low-cost and readily available catalyst, and urea as a stable, and easy to manipulate nitrogen source. This methodol. was particularly useful for the direct synthesis of primary and Me amides avoiding the use of ammonia and methylamine gas which can be tedious to manipulate. Furthermore, the transformation does not require the employment of coupling or activating agents which are commonly required.

Chemical Science published new progress about Amidation. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, SDS of cas: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem