Catalysis-chemistry

Xie, Shiwei published the artcileDietary fish oil levels modulated lipid metabolism, immune response, intestinal health and salinity stress resistance of juvenile Penaeus monodon fed a low fish-meal diet, Synthetic Route of 6217-54-5, the publication is Animal Feed Science and Technology (2022), 115321, database is CAplus.

Dietary fish meal (FM) and fish oil (FO) replacement are crucial for the sustainable development of aquaculture. An eight weeks feeding trial was conducted to evaluate the potential replacing FM with soy protein concentrate, and the suitable FO level for a low FM diet of Penaeus monodon. The experiment was conducted in quadruplicates (30 shrimp per replicate, average weight 1.00 ¡À 0.01 g). The results indicated that besides the final body weight, there were no differences in weight gain, feed efficiency and survival rate observed among the four groups. The results of the acute salinity stress showed that shrimp fed the C and MF diets showed a similar survival rate, which was significantly higher than those fed a LF diet. Shrimp that were fed a LF diet showed the lowest expression levels of inhibitor of apoptosis proteins, Toll and tumor necrosis factor receptor associated factor 6 (TRAF6) in the hepatopancreas, as well as the highest expression levels of Toll, extracellular signal-regulated kinase, Relish and TRAF6 in the intestine among four groups. Intestinal microstructure damage was observed in shrimp that were fed a LF diet, and intestinal endoplasmic reticulum (ER) swelling was observed in shrimp fed MF and LF diets. In conclusion, these results indicated that the growth performance of shrimp was not affected when the FM and FO contents decreased, whereas a low content of FM neg. influenced the immune response in shrimp by modulating IMD and ER stress related gene expression.

Animal Feed Science and Technology published new progress about 6217-54-5. 6217-54-5 belongs to catalysis-chemistry, auxiliary class Alkenyl,Carboxylic acid,Aliphatic hydrocarbon chain,Metabolic Enzyme,RAR/RXR,Natural product, name is Docosahexaenoic Acid, and the molecular formula is C5H5F3O2, Synthetic Route of 6217-54-5.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Padungros, Panuwat published the artcilePractical Synthesis of Aromatic Dithiocarbamates, Safety of Bis(4-nitrophenyl)amine, the publication is Synthetic Communications (2014), 44(16), 2336-2343, database is CAplus and MEDLINE.

Oxidation-sensitive N,N-diaryl dithiocarbamates (DTCs) are synthesized in good yields by the generation of metal amide salts from N-benzoyl precursors, followed by addition of CS₂. para-Substituted diphenylamines are prepared by electrophilic aromatic substitution of diphenylbenzamide and saponification Deacylation of electron-rich species such as bis(p-dimethylaminophenyl)benzamide is challenging because of the oxidative sensitivity of the anionic intermediate but could be achieved in good yield by using n-BuLi to generate a hemiaminal adduct, prior to acidification. The N,N-diaryl DTCs are stable as alkali salts and can be used to produce densely packed monolayers on gold surfaces.

Synthetic Communications published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Safety of Bis(4-nitrophenyl)amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Maruizumi, Takuya published the artcileNeutral carrier-based sodium(1+)-selective electrode for application in blood serum, Quality Control of 5411-14-3, the publication is Mikrochimica Acta (1986), 1(5-6), 331-6, database is CAplus.

The ionophore N,N,N‘,N‘-tetracyclohexyl-1,2-phenylenedioxydiacetamide shows higher lipophilicity and superior Na⁺/K⁺ selectivity than the previously described N,N‘-dibenzyl-N,N‘-diphenyl-1,2-phenylenedioxydiacetamide. It is a suitable component of Na⁺-selective liquid membrane electrodes for the assay of Na⁺ in clin. analyzers.

Mikrochimica Acta published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Quality Control of 5411-14-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Montagnat, Oliver D. published the artcileLessons learned in development of sustained release penicillin drug delivery systems for prophylactic treatment of rheumatic heart disease (RHD), Safety of N1,N2-Dibenzylethane-1,2-diamine, the publication is Drug Delivery and Translational Research (2018), 8(3), 729-739, database is CAplus and MEDLINE.

The current prophylactic treatment to prevent rheumatic heart disease requires four-weekly i.m. injection of a suspension of the poorly soluble benzathine salt form of penicillin G (BPG) often for more than 10 years. In seeking to reduce the frequency of administration to improve adherence, biodegradable polymer matrixes have been investigated. Poly(lactide-co-glycolide) (PLGA)-based in situ forming precursor systems containing N-methyl-2-pyrrolidone as solvent and PLGA-based monolithic implants for surgical implantation containing BPG were developed. Long-term release studies indicated low and plateaued release of penicillin G, but continual favorable release profiles for the benzathine counterion, indicating degradation of the polymer and generation of acidic microenvironment being detrimental to penicillin stability. In order to avoid the issue of the acidic product, poly(caprolactone)(PCL) implants were also investigated, with favorable penicillin G release behavior being achieved, and slow release over 180 days. However, when taking into account the mass of polymer, and the total dose of drug calculated from literature pharmacokinetic parameters for penicillin G, we concluded that an implant size of over 7 g would still be required. This may preclude clin. deployment of a polymer matrix type delivery system for this indication in children and adolescents. Therefore, we have learned that biodegradable PLGA-type systems are not suitable for development of sustained release BPG treatments and that although the PCL system provides favorable release behavior, the total size of the implant may still present a hurdle for future development.

Drug Delivery and Translational Research published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Safety of N1,N2-Dibenzylethane-1,2-diamine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Edwards, Afarin published the artcileNitration of 7-substituted 1,3,5-triaza-adamantanes, Application of 1,3,5-Triazaadamantan-7-amine, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1977), 1989-92, database is CAplus.

Nitrations of the triazaadamantanes I (R = NO₂, NH₂, Br, NHAc, N:CHC₆H₄OMe-4) with various nitrating mixtures are described. E.g., reaction of I (R = NO₂) with HNO₃-NH₄NO₃ (NAN) gave the diazacyclohexane derivative II (R = NO₂, R¹ = CH₂N⁺H₃NO₃^–) whereas treatment with HNO₃-H₂SO₄ (NS) gave the bicyclic product III. Similar treatment of I (R = NH₂, Br) with NAN or NS, I (R = NHAc) with NAN, and I (R = N:CHC₆H₄OMe-4) with fuming HNO₃ gave II [R = NHNO₂, Br, R¹ = CH₂N⁺H₃NO₃^–; RR¹ = CH₂N(NO)₂CH₂NAc, CH₂N(NO₂)CH₂NH, resp.]. The mechanism which is postulated for the nitration reactions is similar to that suggested by W. (1976) for the nitration of hexamine with HNO₃.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) published new progress about 14707-75-6. 14707-75-6 belongs to catalysis-chemistry, auxiliary class Triazinanes, name is 1,3,5-Triazaadamantan-7-amine, and the molecular formula is C7H14N4, Application of 1,3,5-Triazaadamantan-7-amine.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Reynolds, D. J. published the artcileCalculation of some nitrogen-15 and carbon-13 nuclear shielding parameters for some ureas and thioureas, Name: 1,1-Dimethylthiourea, the publication is Journal of Molecular Structure: THEOCHEM (1982), 7(3-4), 379-82, database is CAplus.

MO calculations using CNDO/S parameters are employed to determine bond-orders, charge-densities and the shielding of the ¹⁵N and ¹³C nuclei of a series of ureas and thioureas. For the sterically uncrowded mols. a linear relationship is noticed between the ¹⁵N chem. shifts and C-N bond-orders. When steric crowding occurs this simple relationship is no longer applicable.

Journal of Molecular Structure: THEOCHEM published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, Name: 1,1-Dimethylthiourea.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Edwards, A. published the artcileNMR studies on some 1,3,5-triazaadamantane derivatives, Related Products of catalysis-chemistry, the publication is Organic Magnetic Resonance (1978), 11(2), 103-5, database is CAplus.

The ¹H and ¹³C NMR spectra of 11 1,3,5-triazaadamantane derivatives are reported. Ring protonation decreases the screening in the ¹H NMR spectrum and increases that in the corresponding ¹³C NMR spectrum. Triaryl-substituted compounds exist as a single isomer with diequatorial and monoaxial substituents.

Organic Magnetic Resonance published new progress about 14707-75-6. 14707-75-6 belongs to catalysis-chemistry, auxiliary class Triazinanes, name is 1,3,5-Triazaadamantan-7-amine, and the molecular formula is C7H14N4, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Jones, Mark M. published the artcileCharacteristics of chelate antidotes for acute copper(II) intoxication, Application In Synthesis of 38260-01-4, the publication is Journal of Inorganic and Nuclear Chemistry (1981), 43(9), 2175-81, database is CAplus.

Twenty-five chelating agents were exptl. screened to determination the structural features characteristic of antidotes for acute Cu(II) intoxication in mice. Four structural classes of antidote were identified: vicinal dithiols, polyaminocarboxylates, polyethyleneamines and their derivatives, and compounds derived from the ¦Â-mercaptoethylamine structure. The most effective antidote of the compounds examined was HSCH₂CH(SH)CH₂SO₂Na [4076-02-2], with a survival ratio in mice of 37:45 when given at a 10:1 mol ratio with CuSO₄ at a dosage of 10 mg/kg i.p.

Journal of Inorganic and Nuclear Chemistry published new progress about 38260-01-4. 38260-01-4 belongs to catalysis-chemistry, auxiliary class Chelating Agents, name is N1,N1′-(Ethane-1,2-diyl)bis(ethane-1,2-diamine) dihydrochloride, and the molecular formula is C6H20Cl2N4, Application In Synthesis of 38260-01-4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Abdus Salam, Muhammad published the artcileElucidating the role of NiMoS-USY during the hydrotreatment of Kraft lignin, Safety of 4,4′-Dimethyldiphenyl, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2022), 442(Part_2), 136216, database is CAplus.

Major hurdles in Kraft lignin valorization require selective cleavage of etheric and C-C linkages and subsequent stabilization of the fragments to suppress repolymn. reactions to yield higher monomeric fractions. In this regard, we report the development of efficient NiMo sulfides and ultra-stable Y zeolites for the reductive liquefaction and hydrodeoxygenation of Kraft lignin in a Parr autoclave reactor at 400¡ãC and 35 bar of H₂ (@25¡ãC). Comparing the activity test without/with catalyst, it is revealed that NiMo sulfides over ultra-stable Y zeolites (silica/alumina = 30) achieved a significant reduction (?50%) of the re-polymerized solid residue fraction leading to a detectable liquid product yield of 30.5 wt% with a notable monocyclic and alkylbenzenes selectivity (?61 wt%). A phys. mixture counterpart, consisting of hydrothermally synthesized unsupported NiMoS and Y30, on the other hand, shows lower selectivity for such fractions but higher stabilization of the lignin fragments due to enhanced access to the active sites. Moreover, an extended reaction time with higher catalyst loading of the impregnated NiMoY30 facilitated a remarkable alkylbenzene (72 wt%) selectivity with an increased liquid yield of 38.9 wt% and a reduced solid residue of 16.4 wt%. The reason for the high yield and selectivity over NiMoY30, according to the catalyst characterization (H₂-TPR, XPS, TEM) can be ascribed to enhanced stabilization of depolymerized fragments via H₂-activation at a lower temperature and high hydrodeoxygenation ability. In addition, the better proximity of the acidic and deoxygenation sites in NiMoY30 was beneficial for suppressing the formation of polycyclic aromatics

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Safety of 4,4′-Dimethyldiphenyl.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Manos-Turvey, Alexandra published the artcileSynthesis and evaluation of phenoxymethylbenzamide analogues as anti-trypanosomal agents, HPLC of Formula: 31719-76-3, the publication is MedChemComm (2015), 6(3), 403-406, database is CAplus.

The synthesis and anti-trypanosomal activity of a compound library based on a phenoxymethylbenzamide hit discovered in a high throughput screen is described. Several of the analogs exhibited potent activity against Trypanosoma brucei rhodesiense, a human infective strain of the trypanosome parasite, that serve as lead compounds for further optimization.

MedChemComm published new progress about 31719-76-3. 31719-76-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 4-(Phenoxymethyl)benzoic acid, and the molecular formula is C14H12O3, HPLC of Formula: 31719-76-3.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia