Tag: M.W=100-150

Padgett-Pagliai, Kaylie A. published the artcileOsmotic stress induces long-term biofilm survival in Liberibacter crescens, Computed Properties of 63-68-3, the publication is BMC Microbiology (2022), 22(1), 52, database is CAplus and MEDLINE.

Citrus greening, also known as Huanglongbing (HLB), is a devastating citrus plant disease caused predominantly by Liberibacter asiaticus. While nearly all Liberibacter species remain uncultured, here we used the culturable L. crescens BT-1 as a model to examine physiol. changes in response to the variable osmotic conditions and nutrient availability encountered within the citrus host. Similarly, physiol. responses to changes in growth temperature and DMSO concentrations were also examined, due to their use in many of the currently employed therapies to control the spread of HLB. Sublethal heat stress was found to induce the expression of genes related to tryptophan biosynthesis, while repressing the expression of ribosomal proteins. Osmotic stress induces expression of transcriptional regulators involved in expression of extracellular structures, while repressing the biosynthesis of fatty acids and aromatic amino acids. The effects of osmotic stress were further evaluated by quantifying biofilm formation of L. crescens in presence of increasing sucrose concentrations at different stages of biofilm formation, where sucrose-induced osmotic stress delayed initial cell attachment while enhancing long-term biofilm viability. Our findings revealed that exposure to osmotic stress is a significant contributing factor to the long term survival of L. crescens and, possibly, to the pathogenicity of other Liberibacter species.

BMC Microbiology published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Computed Properties of 63-68-3.

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

Das, Krishna Mohan published the artcileA novel quinoline-based NNN-pincer Cu(II) complex as a superior catalyst for oxidative esterification of allylic C(sp³)-H bonds, Application of 2-Methylbenzoic acid, the publication is Organic & Biomolecular Chemistry (2022), 20(17), 3540-3549, database is CAplus and MEDLINE.

A quinoline-based NNN-pincer Cu(II) complex acts as an air stable superior catalyst for the oxidative cross-coupling of the allyl sp³ C-H bond with an acid for the synthesis of allyl esters in a homogeneous system at ambient temperature The synthesized catalyst, Cu(II) complex has been well characterized by various anal. techniques (HRMS, single crystal X-ray diffraction, CV, EPR, UV-vis spectroscopy) and showed excellent catalytic activity for the oxidative esterification of allylic C(sp³)-H bonds at 40¡ãC within a very short period of time (1 h) using only 1 mol% of the catalyst. A wide variety of aromatic allylic esters were synthesized in moderate to good yields, which could be extended to aliphatic allyl esters as well.

Organic & Biomolecular Chemistry published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Application of 2-Methylbenzoic acid.

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

Giannola, Libero Italo published the artcileAddition reactions of acetylenic esters with monosubstituted thioureas, Recommanded Product: 1,1-Dimethylthiourea, the publication is Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) (1978), 1428-31, database is CAplus.

Treating H₂NCSNHR (R = Et, Me) with MeO₂CCú·CCO₂Me gave 54 and 43% adducts I, and 22 and 38% adducts II, resp. Previous studies by J. W. Lown and J.C.N. Ma (1967) indicated the formation of only one product.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) 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, Recommanded Product: 1,1-Dimethylthiourea.

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

Lopez, S. published the artcileSpray pyrolysis deposition of tin sulfide (Sn_xS_y) thin films, Application of 1,1-Dimethylthiourea, the publication is Semiconductor Science and Technology (1994), 9(11), 2130-3, database is CAplus.

Tin sulfide (Sn_xS_y) thin films have been prepared on Pyrex glass substrates by the spray pyrolysis technique using tin chloride (SnCl₂) and N,N-dimethylthiourea (CH₃NHCSNHCH₃) as starting materials. The depositions were carried out in the range of substrate temperatures from 320 to 450¡ã. From x-ray diffraction measurements and SEM micrographs, it is found that the values of x and y, which determine the type of deposited compound, depend on the substrate temperature At lower substrate temperatures (320-360¡ã), mixed phases such as Sn₂S₃ and ¦Ã-Sn₂S₃ are present. At intermediate substrate temperatures (370-390¡ã), the SnS phase is predominant. For substrate temperatures higher than 390¡ã, the deposited material is mainly SnO₂. The optical reflectance and transmittance of SnS were used in an iterative method to obtain the refractive index (n) and the excitation coefficient (k). The values of n and k were used to calculate the absorption coefficient (k). These values of n and k were used to calculate the absorption coefficient (¦Á) and the bandgap (E_G), giving the result E_G = 1.27 eV. Measurements of the dark conductance (¦Ò) as a function of T were made and an activation energy of 0.54 eV was determined from the slope of a plot of ln ¦Ò vs. 1/T.

Semiconductor Science and Technology 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, Application of 1,1-Dimethylthiourea.

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

Mihara, Akane published the artcileAssociation of serum s-adenosylmethionine, s-adenosylhomocysteine, and their ratio with the risk of dementia and death in a community, Category: catalysis-chemistry, the publication is Scientific Reports (2022), 12(1), 12427, database is CAplus and MEDLINE.

Abstract: We examined the association of serum s-adenosylmethionine (SAM), s-adenosylhomocysteine (SAH) (methionine metabolites), and their ratio on the risk of dementia and death in a community-dwelling population of older Japanese individuals. 1371 residents of Hisayama, Japan, aged 65 years or older and without dementia, were followed for a median of 10.2 years (2007-2017). We divided serum SAM, SAH, and SAM/SAH ratio into quartiles. Cox proportional hazards models were used to estimate the hazard ratios (HRs) and their 95% confidence intervals (CIs) of serum SAM, SAH, and SAM/SAH ratio levels on the risk of a composite outcome of all-cause dementia or death, and each outcome. During the follow-up, 635 participants developed all-cause dementia and/or died, of which 379 participants developed dementia and 394 deaths occurred. The multivariable-adjusted HRs of the composite outcome decreased significantly with increasing serum SAM levels (P for trend = 0.01), while they increased significantly with higher serum SAH levels (P for trend = 0.03). Higher serum SAM/SAH ratio levels were significantly associated with a lower risk of the composite outcome (P for trend = 0.002), as well as with lower risk of each outcome. Our findings suggest that the balance of methionine metabolites may closely associate with the risk of dementia and death.

Scientific Reports published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C5H11NO2S, Category: catalysis-chemistry.

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

Komatsuda, Masaaki published the artcileRing-Opening Fluorination of Isoxazoles, Application of 2-Methylbenzoic acid, the publication is Organic Letters (2022), 24(17), 3270-3274, database is CAplus and MEDLINE.

A series of tertiary fluorinated carbonyls I [R¹ = Ph, 2-naphthyl, 2-thienyl, etc.; R² = Me, nBu, (CH₂)₂Ph, etc.] was developed via ring-opening fluorination of isoxazoles by using an electrophilic fluorinating agent (Selectfluor) followed by deprotonation. This method featured mild reaction conditions, good functional group tolerance and a simple exptl. procedure. Diverse transformations of the resulting ¦Á-fluorocyanoketones were also demonstrated, furnished a variety of fluorinated compounds

Organic Letters published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Application of 2-Methylbenzoic acid.

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

Trchunyan, A. A. published the artcileN,N’-dicyclohexylcarbodiimide-sensitive and potassium-dependent proton secretion from anaerobically grown E. coli, Recommanded Product: 1,1-Dimethylthiourea, the publication is Biofizika (1989), 34(2), 322-3, database is CAplus.

Dependence of N,N‘-dicyclohexylcarbodiimide (DCC)-sensitive H⁺ secretion on K⁺ activity was observed This dependence took place only in anaerobically grown Escherichia?coli and only at the structurally intact DCC-sensitive H⁺-ATPase complex and K⁺-ionophore Trk.

Biofizika 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 C13H9FO2, Recommanded Product: 1,1-Dimethylthiourea.

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

Zhou, Ming published the artcileDesign, synthesis and biological evaluation of indeno[1,2-d]thiazole derivatives as potent histone deacetylase inhibitors, Product Details of C3H8N2S, the publication is Bioorganic & Medicinal Chemistry Letters (2013), 23(11), 3200-3203, database is CAplus and MEDLINE.

Novel indeno[1,2-d]thiazole hydroxamic acids were designed, synthesized, and evaluated for histone deacetylases (HDACs) inhibition and antiproliferative activities on tumor cell lines. Most of the tested compounds exhibited HDAC inhibition and antiproliferative activity against both MCF7 and HCT116 cells with GI₅₀ values in the sub-micromolar range. Among them, compound I showed good inhibitory activity against pan-HDAC with IC₅₀ value of 0.14 ¦ÌM and significant growth inhibition on MCF7 and HCT116 cells with GI₅₀ values of 0.869 and 0.535 ¦ÌM, resp.

Bioorganic & Medicinal Chemistry Letters 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 C12H9N3O4, Product Details of C3H8N2S.

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

Takahashi, Hitoe published the artcileSelenoureas and thioureas are effective superoxide radical scavengers in vitro, Product Details of C3H8N2S, the publication is Life Sciences (2005), 76(19), 2185-2192, database is CAplus and MEDLINE.

The authors investigated scavenging of superoxide radicals by selenoureas and thioureas using a highly sensitive and quant. chemiluminescence method. At 330 nM, five selenoureas and five thioureas scavenged fractions of superoxide radicals (O^–₂) ranging from 8.4% to 87.6%. Among five N,N-unsubstituted selenoureas and N,N-unsubstituted thioureas, 1-selenocarbamoylpiperidine and 1-thiocarbamoylpyrrolidine were the most effective scavengers. The study showed that selenoureas could be used as new superoxide anion-scavenging substances.

Life Sciences 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 C8H6ClF3, Product Details of C3H8N2S.

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

Burger, Klaus published the artcileA surprising access route to ¦Á-hetero-substituted methylphosphonate esters, SDS of cas: 6972-05-0, the publication is Chemiker-Zeitung (1988), 112(3), 108-9, database is CAplus.

A mixture of 2,2-bis(trifluoromethyl)oxazolone I and P(OMe)₃ reacts with thiourea, as well as with N,N-dimethylthiourea, morpholinothioamide, and thioacetamide to give 65% (MeO)₂P(O)CH(SMe)NHCH(CF₃)₂.

Chemiker-Zeitung 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, SDS of cas: 6972-05-0.

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