Category: amides-buliding-blocks

Li, Xiaoqin; Fang, Zhijuan; He, Xinye; Zhang, Shuqin; Ding, Hongliu; Ye, Hu published an article in 2021, the title of the article was Optimization of 204 veterinary drug residues method and establishing their mass spectrum library.Reference of N-((4-Aminophenyl)sulfonyl)acetamide And the article contains the following content:

A multi-class multi-residue anal. method was validated in this paper for simultaneously identifying 204 veterinary drugs in pork by UPLC-QTRAP MS/MS, including sulfonamides, quinolones, 尾-agonists, and nitroimidazoles. MRM-IDA-EPI mode of QTRAP was used to establish a secondary mass spectrum library of these 204 veterinary drugs, which could enhance the qual. anal. of suspect substances. The separation of substances was performed on a C18 column, with a gradient elution of 0.1% formic acid solution in water and methanol. Electrospray ionization (ESI), fast polarity switching, and scheduled MRM mode were used to collect the characterization results. Factors that affected the recovery were delicately optimized, such as solvent proportion, formic acid content, and purification method. We finally determined the extracting method with formic acid-acetonitrile-water (0.1:90:10, v:v:v) and purifying method with Cleanert LipoNo as a package for dispersive solid-phase extraction Matrix effects on the quant. results were also investigated. Some compounds had strong matrix inhibition or enhancement, and the matrix matching external standard method was used to quantify the compounds accurately. The correlation coefficient R2 was over 0.99 within the calibration linearity range for the detected 204 veterinary drugs. The limit of quantification (LOQ) was 0.5 鈭?5 渭g/kg. The recoveries ranged from 61.4% to 118.8% with RSDs of 3.1% to 19.2% (n = 6). The experimental process involved the reaction of N-((4-Aminophenyl)sulfonyl)acetamide(cas: 144-80-9).Reference of N-((4-Aminophenyl)sulfonyl)acetamide

The Article related to veterinary drug residue mass spectrum library, Placeholder for records without volume info and other aspects.Reference of N-((4-Aminophenyl)sulfonyl)acetamide

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

Bawar, Khirsten Marie; Cruz, Leannie Praise; Ilao, Kristine Bernadette; Justiniano, Julianne Mica; Panganiban, Lara Mae; Fabito, Diane Laine; Amayun, Christine Joy; Nas, John Sylvester published an article in 2021, the title of the article was In silico identification of novel compounds as quorum-sensing inhibitors in selected waterborne pathogens.COA of Formula: C13H12N2O And the article contains the following content:

Quorum sensing (QS) is a process involved in producing, detecting, responding, and releasing signaling mols. to maintain physiol. activities of most utilized by both gram-pos. and gram-neg. bacteria in various environmental conditions. This study aims to identify novel compounds that have potential QS inhibitory mechanisms against the gram-pos. bacteria Staphylococcus aureus (S. aureus) and Streptococcus pneumoniae (S. pneumoniae), and the gram-neg. bacteria Salmonella typhi (S. typhi) and Escherichia coli (E. coli). Compounds that are structurally similar to the known QS inhibitors were identified using ligand-based screening. Candidate compounds with 40 to 80% similarity with the known QS inhibitors were further evaluated through mol. docking with the QS-associated enzymes, namely ComA, ComE, LsrF, LsrK, AgrC, AgrA, LsrB, and Hfq. The binding affinity was visualized to identify the different non-covalent binding interactions. Compounds with <-8.0 kcal/mol docking score were considered for evaluation for their distribution coefficient (LogD) at different optimal growth of the bacteria, such as pH 4, 6, 7.4, 7.8, 8, and 9. Out of the 63 compounds evaluated, only three compounds demonstrated a high binding affinity, namely 1-phenyl-3-[5-(phenylcarbamoylamino)naphthalen-1-yl]urea and 1-naphthalen1-yl-3-[5-(naphthalen-1-ylcarbamoylamino)naphthalen-1-yl]urea with ComE of S. pneumoniae and 3-[(4-Methylphenyl)sulfonyl][1,2,3]triazolo[1,5-a]quinazolin-5(4H)-one to AgrA of S. aureus. Their high binding affinity may be attributed to the numerous hydrogen bonds and hydrophobic interactions. However, only 3-[(4-Methylphenyl)sulfonyl][1,2,3]triazolo[1,5-a]quinazolin-5(4H)-one has comparable LogD value with its QS inhibitor of AgrA, savarin, at the optimal growth pH for S. aureus. These findings suggest that the use of 3-[(4-Methylphenyl)sulfonyl][1,2,3]triazolo[1,5-a] quinazolin-5(4H)-one may be effective in controlling S. aureus growth probably through inhibition of AgrA. However, further studies are needed to confirm these findings. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).COA of Formula: C13H12N2O

The Article related to waterborne pathogen quorum sensing inhibitor, Placeholder for records without volume info and other aspects.COA of Formula: C13H12N2O

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

On May 12, 2020, Henschel, Henning; Andersson, Alfred T.; Jespers, Willem; Mehdi Ghahremanpour, Mohammad; van der Spoel, David published an article.Safety of N,N-Diethylacetamide The title of the article was Theoretical Infrared Spectra: Quantitative Similarity Measures and Force Fields. And the article contained the following:

IR spectroscopy can provide significant insight into the structures and dynamics of mols. of all sizes. The information that is contained in the spectrum is, however, often not easily extracted without the aid of theor. calculations or simulations. We present here the calculation of the IR spectra of a database of 703 gas phase compounds with four different force fields (CGenFF, GAFF-BCC, GAFF-ESP, and OPLS) using normal-mode anal. Modern force fields increasingly use virtual sites to describe, e.g., lone-pair electrons or the 蟽-holes on halogen atoms. This requires some adaptation of code to perform normal-mode anal. of such compounds,the implementation of which into the GROMACS software is briefly described as well. For the quant. comparison of the obtained spectra with exptl. reference data, we discuss the application of two different statistical correlation coefficients, Pearson and Spearman. The advantages and drawbacks of the different methods of comparison are discussed, and we find that both methods of comparison give the same overall picture, showing that present force field methods cannot match the performance of quantum chem. methods for the calculation of IR spectra. The experimental process involved the reaction of N,N-Diethylacetamide(cas: 685-91-6).Safety of N,N-Diethylacetamide

The Article related to ir spectrum similarity force field database, Placeholder for records without volume info and other aspects.Safety of N,N-Diethylacetamide

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

Saluti, Giorgio; Colagrande, Maria Novella; Castellani, Federica; Ricci, Matteo; Diletti, Gianfranco; Scortichini, Giampiero published an article in 2021, the title of the article was Survey on Antibiotic Residues in Egg Samples in Italy.Electric Literature of 144-80-9 And the article contains the following content:

The presence of antibiotic residue in eggs is a current issue due to the increasingly important phenomenon of antibiotic resistance. A multiclass, confirmatory method for the determination of seventy-three antimicrobial agents (amphenicols, cephalosporins, diaminopyrimidines, lincosamides, macrolides, penicillins, pleuromutilins, quinolones, sulfonamides, and tetracyclines) with liquid chromatog. high-resolution mass spectrometry was applied to 200 egg samples collected from 119 Italian farms during the years 2018-2021. The experimental process involved the reaction of N-((4-Aminophenyl)sulfonyl)acetamide(cas: 144-80-9).Electric Literature of 144-80-9

The Article related to egg sample antibiotic residue survey italy, Placeholder for records without volume info and other aspects.Electric Literature of 144-80-9

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

On November 30, 2017, Abd El-Hady, Faten K.; Shaker, Kamel H.; Souleman, Ahmed M. A.; Fayad, Walid; Abdel-Aziz, Mohamed S.; Hamed, Ahmed A.; Iodice, Carmine; Tommonaro, Giuseppina published an article.HPLC of Formula: 685-91-6 The title of the article was Comparative Correlation Between Chemical Composition and Cytotoxic Potential of the Coral-Associated Fungus Aspergillus sp. 2C1-EGY Against Human Colon Cancer Cells. And the article contained the following:

Cancer is a leading cause of death in several countries. In the search for new anticancer drugs, marine organisms have played an important role in the discovery of lead compounds and the development of new pharmaceuticals for their wide diversity of chem. structures and biol. activities. In the present study, the cytotoxicity on colorectal cancer cells HCT116 exerted by marine fungus Aspergillus sp. 2C1-EGY extracts associated with the soft coral Sinularia sp. was investigated; the sub-fractions Fr 2c and Fr 2d had significantly high cytotoxic activity (88 and 85%, resp.). Moreover, the major hexadecanoic, octadecanoic, and octadecenoic acids as well as their Me esters were isolated. GC/MS anal. revealed the identification of 46 major and minor compounds, from which 19 saturated and unsaturated fatty acids and eight fatty acid esters were identified. The experimental process involved the reaction of N,N-Diethylacetamide(cas: 685-91-6).HPLC of Formula: 685-91-6

The Article related to cytotoxicity coral fungus aspergillus, Placeholder for records without volume info and other aspects.HPLC of Formula: 685-91-6

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

Mulualem, Yared Fikadu; Chandravanshi, Bhagwan Singh published an article in 2021, the title of the article was Assessment of metals content of widely used traditional toothbrushes in Addis Ababa, Ethiopia.Computed Properties of 456-12-2 And the article contains the following content:

Traditional toothbrushes are used by the vast majority of people who cannot afford to buy the com. toothbrush and toothpaste. The traditional toothbrushes are generally obtained from any slim woody part of a toothbrush tree. The main purpose of this study was to determine selected metals (Ca, Fe, Mg, Al, Cu, Cr, Ni, Zn, Mn, Pb, and Cd) in traditional toothbrushes obtained from three plants including Ligustrum vulgare L., Phoenix reclinata and Olea africana, which are extensively used in Addis Ababa, Ethiopia, by using microwave plasma-at. emission spectroscopy (MP-AES) after wet digestion. Recoveries of the metals in spiked samples varied from 90.4-107%. The overall mean concentrations determined (mg/kg, dry weight) were in the ranges of Ca (4267-36514) > Fe (131-318) > Al (81.6-224) > Mg (45.6-122) > Zn (27.2-175) > Mn (20.1-29) > Cu (6.6- 20.3) > Cr (6.7-8.9) > Ni (2.6-7.9). Anal. of variance at 95% indicated significant differences in the metals’ contents of three toothbrushes. The results indicated that the selected traditional toothbrushes are good sources of essential metals and free from Pb and Cd. Therefore, the investigated Ethiopian traditional toothbrushes are found to be safe for human use. The experimental process involved the reaction of N-(2-Hydroxy-2-(4-methoxyphenyl)ethyl)cinnamamide(cas: 456-12-2).Computed Properties of 456-12-2

The Article related to ligustrum vulgare phoenix reclinata olea africana metal toothbrush ethiopia, Mammalian Pathological Biochemistry: Other and other aspects.Computed Properties of 456-12-2

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

On May 10, 2020, Shields, Erin P.; Weber, Stephen G. published an article.Synthetic Route of 685-91-6 The title of the article was A crosslinked, low pH-stable, mixed-mode cation-exchange like stationary phase made using the thiol-yne click reaction. And the article contained the following:

Mixed-mode cation-exchange stationary phases are useful for the separation of mixtures containing hydrophobic, acidic, and basic mols. To ensure that weak organic bases are protonated and carboxylic acids are neutral low pH mobile phases are required. Mixed-mode stationary phases that are stable at pH < 3 are needed. We synthesized a crosslinked structure along the surface of thiol functionalized silica gel particles using the thiol-yne click reaction. The alkyne, 1,7-octadiyne, was added to the 3-mercaptopropyl silica gel, then crosslinked using 1,6-hexanedithiol. Elemental anal. showed low octadiyne ligand surface coverage, but, stoichiometrically, three sulfurs were added to each octadiyne ligand during the crosslinking step, indicating that crosslinking occurred. The effect of the crosslinking on the stability was tested with a 50:50 (volume/volume) pH 0.50 5% TFA aqueous:acetonitrile mobile phase at 70掳C for six days, over 35,000 column volumes The stationary phase showed good stability with the retention of triphenylene decreasing only 20% during that time. The Tanaka test showed that the phase has a methylene selectivity of 1.20 卤 0.04, a high shape selectivity of 2.71 卤 0.03, and a 3.98 卤 0.05 cation-exchange factor at pH 2.70. The phase has a selectivity factor for nitrobenzene and benzene of 1.41 卤 0.01, indicating the electron donating charge transfer characteristic of the phase. The mixed-mode characteristics of the phase were investigated using a mixture of the monoamine neurotransmitters norepinephrine, dopamine, and serotonin. Baseline resolution of the monoamines could be obtained using a simple 20 mM potassium phosphate (pH 2.70)/methanol mobile phase. Altering both the methanol content and the potassium ion concentration altered the retention of the monoamines indicating mixed-mode cation exchange characteristic of the crosslinked stationary phase. The experimental process involved the reaction of N,N-Diethylacetamide(cas: 685-91-6).Synthetic Route of 685-91-6

The Article related to ph cation exchange stationary phase thiol yne click reaction, acid stable, cation-exchange, charge-transfer, mixed-mode, thiol-yne click chemistry, Organic Analytical Chemistry: Separations and other aspects.Synthetic Route of 685-91-6

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