Tag: M.W=300-400

Recommanded Product: (S)-4-((Benzyloxy)carbonyl)-1-(tert-butoxycarbonyl)piperazine-2-carboxylic acid. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (S)-4-((Benzyloxy)carbonyl)-1-(tert-butoxycarbonyl)piperazine-2-carboxylic acid, is researched, Molecular C18H24N2O6, CAS is 138775-03-8, about Synthesis of N,N’-Orthogonally Protected (S)-Piperazine-2-carboxylic Acid. Author is Warshawsky, Alan M.; Patel, Meena V.; Chen, Teng-Man.

(S)-1-tert-butoxycarbonyl-4-benzyloxycarbonyl-2-piperazinecarboxylic acid was prepared in 4 steps and 40% overall yield from N-tert-butoxycarbonyl-L-serine β-lactone. The sequence required only a single chromatog. purification and yielded optically pure product.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Synthetic Route of C10H8ClN4NaO2S. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide, is researched, Molecular C10H8ClN4NaO2S, CAS is 23307-72-4, about A self-assembly pipette tip graphene solid-phase extraction coupled with liquid chromatography for the determination of three sulfonamides in environmental water. Author is Sun, Ning; Han, Yehong; Yan, Hongyuan; Song, Yanxue.

A sensitive, economical, and miniaturized self-assembly pipet tip graphene solid-phase extraction (PT-G-SPE) coupled with liquid chromatog. fluorescence detection (LC-FD) was developed for rapid extraction and determination of three sulfonamide antibiotics (SAs) in environmental water samples. The PT-G-SPE cartridge, assembled by packing 1.0 mg of graphene as sorbent into a 100 μL pipet tip, showed high adsorption capacity for the SAs owing to the large surface area and unique structure of graphene. The factors that affected the extraction efficiency of PT-G-SPE, including sample volume, pH, sorbent amount, washing solvent and eluent solvent were optimized. Good linearity for SAs was obtained in a range of 2-4000 pg mL-1 with correlation coefficients (r2) ≥0.9993. The recoveries of the SAs at three spiked levels ranged from 90.4 to 108.2% with RSD ≤6.3%. In comparison with other sorbents such as C18, HLB, SCX, PCX, and multiwalled carbon nanotubes, one advantage of using graphene as sorbent of pipet tip solid-phase extraction (PT-SPE) was that PT-G-SPE could adsorb larger sample volume (10 mL) at a small amount of sorbent (1 mg) and low solvent consumption with good extraction efficiency, which not only increased the fraction of analytes to LC and the sensitivity of SAs determination, but also reduced the cost and pollution.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hussien, Emad Mohamed; Saleh, Hanaa; El Henawee, Magda; Abou El Khair, Afaf; Ahmed, Neven published the article 《Voltammetric determination of sulfaclozine sodium at sephadex-modified carbon paste electrode》. Keywords: sulfaclozine sodium sephadex modified carbon paste electrode.They researched the compound: Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide( cas:23307-72-4 ).Application In Synthesis of Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:23307-72-4) here.

The electrochem. behavior of Sulfaclozine Sodium (SLC) was studied at a bare and sephadex-modified carbon paste electrodes by cyclic voltammetry and square wave voltammetry. The cyclic voltammetry (CV) showed a well-defined irreversible oxidation peak at 0.94 V in Britton-Robinson buffer pH 7.0. The strong affinity of SLC to sephadex allowed accumulation of SLC at the surface of electrode and thus higher electrochem. sensitivity to SLC. The influence of sephadex loading, the pH of the solution and the scan rate on the peak current was studied. A linear calibration curve covering the concentration range from 0.005 to 1 mM was obtained using SWV. The method was successfully applied for the determination of SLC in the veterinary pharmaceutical formulations with satisfactory accuracy and precision.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

COA of Formula: C10H8ClN4NaO2S. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide, is researched, Molecular C10H8ClN4NaO2S, CAS is 23307-72-4, about Anticoccidial power of sulfachlorpyrazine (Esb 3) against Eimeria acervulina. Author is Yvore, P.; Peloille, Michele; Jacquemot, Catherine.

Sulfachloropyrid-azine has the advantages of the greater efficiency and less toxicity compared with sulphaquinoxaline and sulphamethazine. With 300 mg./l. drinking water a significant anticoccidial activity in the chicken was observed and with 600 mg./l. for 5 days (administration during 3 days, no treatment during 4 days and retreatment for 2 days) no toxic effects were observed. Low doses seem to have coccidiocidal activity on 2nd schizogony. The new anticoccidial derivatives of hydroxyquinoline do not produce any immunity. Particularly E. tenella may develop again after the chemotherapy. It is possible that a complementary treatment by a sulfonamide in the drinking water during the days following the treatment may produce immunity. For this a coccidiocidal and not a coccidiostatic action should be achieved.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Formula: C10H8ClN4NaO2S. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide, is researched, Molecular C10H8ClN4NaO2S, CAS is 23307-72-4, about A self-assembly pipette tip graphene solid-phase extraction coupled with liquid chromatography for the determination of three sulfonamides in environmental water. Author is Sun, Ning; Han, Yehong; Yan, Hongyuan; Song, Yanxue.

A sensitive, economical, and miniaturized self-assembly pipet tip graphene solid-phase extraction (PT-G-SPE) coupled with liquid chromatog. fluorescence detection (LC-FD) was developed for rapid extraction and determination of three sulfonamide antibiotics (SAs) in environmental water samples. The PT-G-SPE cartridge, assembled by packing 1.0 mg of graphene as sorbent into a 100 μL pipet tip, showed high adsorption capacity for the SAs owing to the large surface area and unique structure of graphene. The factors that affected the extraction efficiency of PT-G-SPE, including sample volume, pH, sorbent amount, washing solvent and eluent solvent were optimized. Good linearity for SAs was obtained in a range of 2-4000 pg mL-1 with correlation coefficients (r2) ≥0.9993. The recoveries of the SAs at three spiked levels ranged from 90.4 to 108.2% with RSD ≤6.3%. In comparison with other sorbents such as C18, HLB, SCX, PCX, and multiwalled carbon nanotubes, one advantage of using graphene as sorbent of pipet tip solid-phase extraction (PT-SPE) was that PT-G-SPE could adsorb larger sample volume (10 mL) at a small amount of sorbent (1 mg) and low solvent consumption with good extraction efficiency, which not only increased the fraction of analytes to LC and the sensitivity of SAs determination, but also reduced the cost and pollution.

In some applications, this compound(23307-72-4)Formula: C10H8ClN4NaO2S is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 23307-72-4, is researched, SMILESS is ClC1=CN=CC([N-]S(=O)(C2=CC=C(N)C=C2)=O)=N1.[Na+], Molecular C10H8ClN4NaO2SJournal, Article, Research Support, Non-U.S. Gov’t, Journal of Molecular Modeling called Non-stochastic and stochastic linear indices of the molecular pseudograph’s atom-adjacency matrix: a novel approach for computational in silico screening and “”rational”” selection of new lead antibacterial agents, Author is Marrero-Ponce, Yovani; Marrero, Ricardo Medina; Torrens, Francisco; Martinez, Yamile; Bernal, Milagros Garcia; Zaldivar, Vicente Romero; Castro, Eduardo A.; Abalo, Ricardo Grau, the main research direction is antibacterial mol pseudograph atom adjacency matrix drug design QSAR.HPLC of Formula: 23307-72-4.

A novel approach (TOMOCOMD-CARDD) to computer-aided rational drug design is illustrated. This approach is based on the calculation of the non-stochastic and stochastic linear indexes of the mol. pseudograph’s atom-adjacency matrix representing mol. structures. These TOMOCOMD-CARDD descriptors are introduced for the computational (virtual) screening and rational selection of new lead antibacterial agents using linear discrimination anal. The two structure-based antibacterial-activity classification models, including non-stochastic and stochastic indexes, classify correctly 91.61% and 90.75%, resp., of 1525 chems. in training sets. These models show high Matthews correlation coefficients (MCC = 0.84 and 0.82). An external validation process was carried out to assess the robustness and predictive power of the model obtained. These QSAR models permit the correct classification of 91.49% and 89.31% of 505 compounds in an external test set, yielding MCCs of 0.84 and 0.79, resp. The TOMOCOMD-CARDD approach compares satisfactorily with respect to nine of the most useful models for antimicrobial selection reported to date. Finally, an in silico screening of 87 new chems. reported in the antiinfective field with antibacterial activities is developed showing the ability of the TOMOCOMD-CARDD models to identify new lead antibacterial compounds

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called A self-assembly pipette tip graphene solid-phase extraction coupled with liquid chromatography for the determination of three sulfonamides in environmental water, published in 2014-01-31, which mentions a compound: 23307-72-4, Name is Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide, Molecular C10H8ClN4NaO2S, Related Products of 23307-72-4.

A sensitive, economical, and miniaturized self-assembly pipet tip graphene solid-phase extraction (PT-G-SPE) coupled with liquid chromatog. fluorescence detection (LC-FD) was developed for rapid extraction and determination of three sulfonamide antibiotics (SAs) in environmental water samples. The PT-G-SPE cartridge, assembled by packing 1.0 mg of graphene as sorbent into a 100 μL pipet tip, showed high adsorption capacity for the SAs owing to the large surface area and unique structure of graphene. The factors that affected the extraction efficiency of PT-G-SPE, including sample volume, pH, sorbent amount, washing solvent and eluent solvent were optimized. Good linearity for SAs was obtained in a range of 2-4000 pg mL-1 with correlation coefficients (r2) ≥0.9993. The recoveries of the SAs at three spiked levels ranged from 90.4 to 108.2% with RSD ≤6.3%. In comparison with other sorbents such as C18, HLB, SCX, PCX, and multiwalled carbon nanotubes, one advantage of using graphene as sorbent of pipet tip solid-phase extraction (PT-SPE) was that PT-G-SPE could adsorb larger sample volume (10 mL) at a small amount of sorbent (1 mg) and low solvent consumption with good extraction efficiency, which not only increased the fraction of analytes to LC and the sensitivity of SAs determination, but also reduced the cost and pollution.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide(SMILESS: ClC1=CN=CC([N-]S(=O)(C2=CC=C(N)C=C2)=O)=N1.[Na+],cas:23307-72-4) is researched.Quality Control of (2S)-(+)-3-Chloropropane-1,2-diol. The article 《Non-stochastic and stochastic linear indices of the molecular pseudograph’s atom-adjacency matrix: a novel approach for computational in silico screening and “”rational”” selection of new lead antibacterial agents》 in relation to this compound, is published in Journal of Molecular Modeling. Let’s take a look at the latest research on this compound (cas:23307-72-4).

A novel approach (TOMOCOMD-CARDD) to computer-aided rational drug design is illustrated. This approach is based on the calculation of the non-stochastic and stochastic linear indexes of the mol. pseudograph’s atom-adjacency matrix representing mol. structures. These TOMOCOMD-CARDD descriptors are introduced for the computational (virtual) screening and rational selection of new lead antibacterial agents using linear discrimination anal. The two structure-based antibacterial-activity classification models, including non-stochastic and stochastic indexes, classify correctly 91.61% and 90.75%, resp., of 1525 chems. in training sets. These models show high Matthews correlation coefficients (MCC = 0.84 and 0.82). An external validation process was carried out to assess the robustness and predictive power of the model obtained. These QSAR models permit the correct classification of 91.49% and 89.31% of 505 compounds in an external test set, yielding MCCs of 0.84 and 0.79, resp. The TOMOCOMD-CARDD approach compares satisfactorily with respect to nine of the most useful models for antimicrobial selection reported to date. Finally, an in silico screening of 87 new chems. reported in the antiinfective field with antibacterial activities is developed showing the ability of the TOMOCOMD-CARDD models to identify new lead antibacterial compounds

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 23307-72-4, is researched, Molecular C10H8ClN4NaO2S, about High-throughput screening of pesticide and veterinary drug residues in baby food by liquid chromatography coupled to quadrupole Orbitrap mass spectrometry, the main research direction is pesticide veterinary drug baby food quadrupole Orbitrap mass spectrometry; Baby food; Multi-residue methods; Q-Orbitrap; Targeted-screening; Validation.Quality Control of Sodium ((4-aminophenyl)sulfonyl)(6-chloropyrazin-2-yl)amide.

A new anal. method was developed and validated for simultaneous anal. of 333 pesticide and veterinary drug residues in baby food. Response surface methodol. was employed to optimize a generic extraction method. Ultrahigh-performance liquid chromatog. and electrospray ionization quadrupole Orbitrap high-resolution mass spectrometry (UHPLC-ESI Q-Orbitrap) was used for the separation and detection of all the analytes. The method was validated by taking into consideration the guidelines specified in Commission Decision 2002/657/EC and SANCO/12571/2013. The extraction recoveries were in a range of 79.8-110.7%, with coefficient of variation <8.3%. The 333 compounds behave dynamic in the range 0.1-1000 μg kg-1 concentration, with correlation coefficient >0.99. The limits of detection for the analytes are in the range 0.01-5.35 μg kg-1. The limits of quantification for the analytes are in the range 0.01-9.27 μg kg-1. This method has been successfully applied on screening of pesticide and veterinary drugs in ninety-three com. baby food samples, and tilmicosin, fenbendazole, tylosin tartrate and thiabendazole were detected in some samples tested in this study. The present study is very useful for fast screening of different food contaminants.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Reference of (S)-4-((Benzyloxy)carbonyl)-1-(tert-butoxycarbonyl)piperazine-2-carboxylic acid. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: (S)-4-((Benzyloxy)carbonyl)-1-(tert-butoxycarbonyl)piperazine-2-carboxylic acid, is researched, Molecular C18H24N2O6, CAS is 138775-03-8, about Discovery of (2S)-N-[(1R)-2-[4-cyclohexyl-4-[[(1,1-dimethylethyl)amino]carbonyl]-1-piperidinyl]-1-[(4-fluorophenyl)methyl]-2-oxoethyl]-4-methyl-2-piperazinecarboxamide (MB243), a potent and selective melanocortin subtype-4 receptor agonist.

We report the discovery and optimization of substituted 2-piperazinecarboxamides as potent and selective agonists of the melanocortin subtype-4 receptor. Further in vivo development of lead agonist, MB243, is disclosed.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com