Month: November 2022

2D lanthanide coordination polymers as multi-responsive luminescence sensors for selective and sensitive recognition of Cr(VI)/MnO^–₄ anions and broad-spectrum detection of antibiotics was written by Yuan, Gang;Chen, Zi-Qi;Zhang, Chao;Xie, Zi-Yu;Liu, Shi-Yu;Meng, Xiao-Hang;Sun, Jing-Yu;Li, Xiu-Mei;Dong, Li-Hong;Hao, Xiang-Rong. And the article was included in Journal of Solid State Chemistry in 2022.Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid The following contents are mentioned in the article:

Three new Ln(III)-CPs, {[Ln₂(HL)₂(H₂O)₂]·H₂O}_n (Ln = La (1), Eu (2) and Tb (3); H₄L = 1,1′-(ethane-1,2-diyl)bis(1H-imidazole-4,5-dicarboxylic acid)) were hydrothermally synthesized and characterized by elemental analyses, IR, TG, PXRD and single-crystal x-ray diffraction. These isostructural CPs display 2D layer-like structures with a TiS₂ topol. constructed from inter-connected cage-like SBBs. The Eu-CP and Tb-CP exhibit characteristic luminescent emissions based on metal ions and possess selective recognition ability toward Cr(VI) and MnO^–₄ ions in aqueous solution They can also act as broad-spectrum fluorescent probes to detect common antibiotics. Furthermore, the fluorescence quenching mechanisms of two CPs were also studied in detail by combination of the PXRD patterns, UV-vis absorption spectra and theor. calculations This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. The piperazine scaffold is often found in biologically active compounds in different therapeutic areas. These therapeutic areas include antifungals, antidepressants, antivirals, and serotonin receptor (5-HT) antagonists/agonists. Piperazine is formed as a co-product in the ammoniation of 1,2-dichloroethane or ethanolamine. These are the only routes to the chemical used commercially.Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

The preparation of 1-Methyl-3-phenylpiperazine was written by Guan, Cheng-bo;Zhang, Xue-mei;Wei, Meng;Lai, Kun-min;Yu, Zhang-xin;Yan, Zhao-hua. And the article was included in Nanchang Daxue Xuebao, Likeban in 2012.Quality Control of tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate The following contents are mentioned in the article:

1-Methyl-3-phenylpiperazine was prepared by using Et α-Bromophenylacetate and ethylenediamine as the starting materials in the cyclization. Then with N₄ protection of the Boc group, N1 methylation, N₄ deprotection and reduction of amide group, 1-Methyl-3-phenylpiperazine was synthesized. The total yield is 29%. On the basis of previously reported procedure, we further modified the work-up procedure in the first step of cyclization to increase the production quality and efficiency. The modification included dissolution of the crude product obtained in CH₂Cl₂, and subsequent reactions with a limited amount of di-tert-butyldicarbonate followed by precipitation in THF at low temperature Our modification improved the quality of the intermediate 3-phenyl-2-piperazinone and is easily repeatable. Moreover, in the steps of N₄ protection with Boc group and reduction of amide group, some changes were also made for easy application to industrial manufacturing This study involved multiple reactions and reactants, such as tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate (cas: 911705-40-3Quality Control of tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate).

tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate (cas: 911705-40-3) belongs to piperazine derivatives. A form in which piperazine is commonly available industrially is as the hexahydrate, C4H10N2. 6H2O, which melts at 44 °C and boils at 125–130 °C. Piperazine and its salts did not induce point mutations in a bacterial test. A series of mutagenicity studies in cells, both in vitro and in vivo, has been completed and showed no evidence of mutagenic effect.Quality Control of tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Simultaneous screening and analysis of 155 veterinary drugs in livestock foods using ultra-high performance liquid chromatography tandem quadrupole linear-ion-trap mass spectrometry was written by Wang, Juanqiang;Zhao, Wentao;Guo, Wenping;Li, Yingying;Jiang, Rui;Li, Huichen;Wang, Shouwei;Li, Zhigang. And the article was included in Food Chemistry in 2022.Reference of 70458-96-7 The following contents are mentioned in the article:

Veterinary drugs are widely used to improve the health and growth of livestock. The supervision of these residues is necessary to ensure food safety. A high-throughput method based on Oasis PRiME HLB with solid phase extraction for simultaneous qual. and quant. anal. of 155 veterinary drugs in livestock foods was developed by the ultra-high performance liquid chromatog. tandem quadrupole linear-ion-trap mass spectrometry (UHPLC-QTRAP-MS). The limits of detection and quantification ranged from 0.5 μg/kg to 5 μg/kg and 2 μg/kg to 20 μg/kg, resp. For over 85% of the analytes, the recoveries were between 60% and 120%. The pos. simulated samples perfectly matched with a purity fit value over 70% from the self-built library. The screening results of UHPLC-QTRAP-MS were almost consistent with UHPLC tandem quadrupole-exactive orbitrap mass spectrometry (UHPLC-Q-Exactive Orbitrap/MS). The evaluated UHPLC-QTRAP-MS method was powerful and reliable for the screening and quantification of veterinary drugs in real samples. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Reference of 70458-96-7).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. Piperazine belongs to the family of medicines called anthelmintics. Outside the body, piperazine has a remarkable power to dissolve uric acid and producing a soluble urate, but in clinical experience it has not proved equally successful. Reference of 70458-96-7

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Two dual functional 3D Cd-based coordination polymers for the highly luminescent sensitive detection of Fe³⁺ and norfloxacin was written by Cao, Qing-Lin;Fu, Lianshe;Cui, Guang-Hua. And the article was included in Journal of Solid State Chemistry in 2022.Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid The following contents are mentioned in the article:

Two new Cd(II) coordination polymers(CPs) [Cd_2.5(L1)(Htbip)(tbip)₂]_n (1) and {[Cd(L2)_0.5(1,4-chdc)]·H₂O}_n (2) (L1 = 1,2-bis(2-ethylbenzimidazol-1-ylmethyl)benzene, L2 = 1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene, H₂tbip = 5-tert-butylisophthalic acid; 1,4-H₂chdc = 1,4-cyclohexanedioic acid) were hydrothermal synthesized and structural characterized. 1 Can be defined as a 3D 6,8T13 network with the point symbol of {3².4¹⁰.5².6}{3⁴.4¹².5⁸.6⁴}. 2 Reveals an unusual 3D xww-3,4-P2₁/c topol. frameworks with the point symbol of {4.8².10³}{4.8²}. Both CPs possessed highly thermal and chem. stability. 1 And 2 can be as bifunctional luminescent sensors for effective detection of Fe³⁺ and norfloxacin. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. Simple N-substituted piperazines have been found in many drug molecules. Outside the body, piperazine has a remarkable power to dissolve uric acid and producing a soluble urate, but in clinical experience it has not proved equally successful. Quality Control of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

A New Discovery towards Novel Skeleton of Benzimidazole-Conjugated Pyrimidinones as Unique Effective Antibacterial Agents was written by Yang, Xi;Syed, Rasheed;Fang, Bo;Zhou, Cheng-He. And the article was included in Chinese Journal of Chemistry in 2022.Category: piperazines The following contents are mentioned in the article:

A class of new potential antibacterial agents with distinctive pyrimidinone benzimidazole skeleton was developed through nucleophilic substitution and Biginelli reaction starting from urea, Et 4-chloroacetoacetate and various aldehydes. Some target mols. exhibited strong antibacterial activities, especially pyrimidinone benzimidazole hybrid 9e possessed the strongest inhibitory effects on the growth of E. faecalis and P. aeruginosa with a lower MIC value of 1 μg/mL than norfloxacin. Moreover, compound 9e displayed strong antibiofilm capacity, low drug resistance and excellent biosafety toward human red blood cells. Further research revealed that compound 9e could disrupt membrane integrity and cause leakage of cellular components such as proteins and nucleic acids. Meanwhile, compound 9e could decrease lactate dehydrogenase activity, block cell metabolism and interact with DNA in an intercalation manner. ADMET anal. predicated that mol. 9e possessed promising pharmacokinetic properties and good bioavailability profile. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Category: piperazines).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. Piperazine was first introduced as an anthelmintic in 1953. Piperazine compounds mediate their anthelmintic action by generally paralyzing parasites, allowing the host body to easily remove or expel the invading organism. Piperazine is formed as a co-product in the ammoniation of 1,2-dichloroethane or ethanolamine. These are the only routes to the chemical used commercially.Category: piperazines

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Development and validation of a UV-spectrophotometric method for the estimation of Nintedanib Esylate in bulk and its formulation was written by Patil, Rohan S.;Mahajan, Moreshwar P.. And the article was included in Research & Reviews: A Journal of Pharmaceutical Science in 2018.Name: (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate The following contents are mentioned in the article:

The present work represents a UV spectrophotometric method for the estimation of Nintedanib Esylate in pure and its formulation. Methanol was used as a solvent. Nintedanib Esylate exhibit absorption maxima at 391 nm. The developed method obeyed Beer-Lambert’s law in the concentration range of 3-18 μg/mL having a line equation Y = 0.065x + 0.001 with a correlation coefficient of 0.999. There is no interference from any pharmaceutical excipients. The precision of the method was determined by performing the intra-day study and inter-day study. The accuracy of the method was confirmed by recovery studies from capsules at three different levels by standard additions Results of the anal. were validated statistically and by recovery study. The anal. method was validated for various parameters as per ICH (International Conference on Harmonization) guidelines. The proposed method was found to be simple, rapid, accurate and precise and can be applied for the routine quality control studies for assay of Nintedanib Esylate in pure and its formulation. This study involved multiple reactions and reactants, such as (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6Name: (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate).

(Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6) belongs to piperazine derivatives. The piperazine scaffold is often found in biologically active compounds in different therapeutic areas. These therapeutic areas include antifungals, antidepressants, antivirals, and serotonin receptor (5-HT) antagonists/agonists. Intermediate for a wide range of pharmaceuticals, polymers, dyes, corrosion inhibitors, rubber accelerators and surfactants.Name: (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Nanostructured lipid carriers as oral delivery systems for improving oral bioavailability of nintedanib by promoting intestinal absorption was written by Zhu, Yunjing;Liang, Xue;Lu, Cong;Kong, Yihan;Tang, Xing;Zhang, Yu;Yin, Tian;Gou, Jingxin;Wang, Yanjiao;He, Haibing. And the article was included in International Journal of Pharmaceutics in 2020.HPLC of Formula: 656247-18-6 The following contents are mentioned in the article:

The aim of this study was to fabricate nanostructured lipid carriers, NLCs, of nintedanib (BIBF) to improve its oral bioavailability. Two types of NLCs loaded with BIBF (BIBF-NLCs-1 and BIBF-NLCs-2) were prepared by the melt-emulsification technique. BIBF-NLCs-1 and BIBF-NLCs-2 showed nanoscale particle sizes of 142.70 ± 0.85 nm and 7.99 ± 0.06 nm, and both were pos. zeta potential. Study on Caco-2 cells showed that BIBF-NLCs-1 exhibited distinct advantages at the cytol. level. The oral bioavailability of BIBF-NLCs-1 and BIBF-NLCs-2 was extremely improved 3.13-fold and 2.39-fold resp. compared with BIBF solution (BIBF-Sol). And in vivo anti-tumor efficiency study in mice bearing LLC lung tumor indicated that BIBF-NLCs-1 and BIBF-NLCs-2 had excellent tumor inhibition. Besides, the two NLCs did not increase the risk of liver damage and can even reduce the incidence of gastrointestinal irritation of BIBF to some extent. In summary, NLCs are a potential oral delivery system to improve the bioavailability of BIBF by promoting intestinal absorption. This study involved multiple reactions and reactants, such as (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6HPLC of Formula: 656247-18-6).

(Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6) belongs to piperazine derivatives. Piperazine belongs to the family of medicines called anthelmintics. Piperazine and its salts did not induce point mutations in a bacterial test. A series of mutagenicity studies in cells, both in vitro and in vivo, has been completed and showed no evidence of mutagenic effect.HPLC of Formula: 656247-18-6

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Solubility measurement and thermodynamic properties of Nintedanib Esylate Hemihydrate in pure solvents was written by Ma, Jinju;Huang, Jingyi;Cao, Zidan;Sha, Jiao;Sun, Renren;He, Haixia;Wan, Yameng;Li, Yu;Li, Tao;Ren, Baozeng. And the article was included in Journal of Molecular Liquids in 2022.Category: piperazines The following contents are mentioned in the article:

The thermodn. property of NE crystallization in 10 pure solvents was studied, and the solid-liquid equilibrium solubility of NE in these ten solvents was determined by laser dynamic method. The result showed that the solubility was proportional to the temperature Five models including the modified Apleblat model, λh model, Polynomial model, Van’t Hoff model, and Yaws model were adopted to fit the solubility of the solute in a single solvent, and the result showed that the Polynomial model had a high fitting degree for the solubility of NE in the single solvent chosen. The activity coefficients, as well as thermodn. properties of the mixing, were obtained and studied. The effect of solvents themselves on the solubility order of Nintedanib Esylate was also studied by correlating to the solubility of Nintedanib Esylate through the KAT-LSER model. What is more, by adopting Mol. Dynamic simulation, it was proved that the Nintedanib Esylate solubility in different solvents could be largely influenced by the interaction of the solute mols. and solvent mols. This study involved multiple reactions and reactants, such as (Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6Category: piperazines).

(Z)-Methyl 3-(((4-(N-methyl-2-(4-methylpiperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ethanesulfonate (cas: 656247-18-6) belongs to piperazine derivatives. A form in which piperazine is commonly available industrially is as the hexahydrate, C4H10N2. 6H2O, which melts at 44 °C and boils at 125–130 °C. Piperazines are very broad chemical group, covering a wide range of drugs from antidepressants to antihistamines. The connecting property of all these chemicals is the presence of a piperazine functional group.Category: piperazines

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Pyrimidine-conjugated fluoroquinolones as new potential broad-spectrum antibacterial agents was written by Tan, Yi-Min;Li, Di;Li, Fen-Fen;Fawad Ansari, Mohammad;Fang, Bo;Zhou, Cheng-He. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2022.Product Details of 70458-96-7 The following contents are mentioned in the article:

Pyrimidine-conjugated fluoroquinolones were constructed to cope with the dreadful resistance. Most of the target pyrimidine derivatives effectively suppressed the growth of the tested strains, especially, 4-aminopyrimidinyl compound 1c showed a broad antibacterial spectrum and low cytotoxicity and exhibited superior antibacterial potency against Enterococcus faecalis with a low MIC of 0.25 μg/mL to norfloxacin and ciprofloxacin. The active compound 1c with fast bactericidal potency could inhibit the formation of biofilms and showed much lower trend for the development of drug-resistance than norfloxacin and ciprofloxacin. Further exploration revealed that compound 1c could prompt ROS accumulations in bacterial cells and interact with DNA to form a DNA-1c complex, thus facilitating bacterial death. ADME anal. indicated that compound 1c possessed favorable drug-likeness and promising pharmacokinetic properties. These results demonstrated that pyrimidine-conjugated fluoroquinolones held hope as potential antibacterial candidates and deserve further study. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Product Details of 70458-96-7).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. Piperazine was first introduced as an anthelmintic in 1953. Piperazine compounds mediate their anthelmintic action by generally paralyzing parasites, allowing the host body to easily remove or expel the invading organism. Piperazine is formed as a co-product in the ammoniation of 1,2-dichloroethane or ethanolamine. These are the only routes to the chemical used commercially.Product Details of 70458-96-7

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Reproductive toxicities of ofloxacin and norfloxacin on Caenorhabditis elegans with multi-generational oscillatory effects and trans-generational residual influences was written by Zhang, Jing;Zheng, Yungu;Yu, Zhenyang. And the article was included in Environmental Toxicology and Pharmacology in 2022.Safety of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid The following contents are mentioned in the article:

The reproductive toxicities over generations are essential to assess the long-term impacts environmental fluoroquinolone antibiotics (FQs). In the present study, the multi-generational effects of ofloxacin (OFL) and norfloxacin (NOR) on reproduction were studied on Caenorhabditis elegans from 9 successive generations (F1-F9). Results showed that OFL showed no effects in F1, stimulation in F2 to F4, and inhibition F5 to F9. The effects of NOR also showed oscillation between stimulation and inhibition across generations. Further biochem. anal. demonstrated that the reproductive toxicities of OFL and NOR were more closely connected with total cholesterol (TCHO), progesterone (P) and testosterone (T), than major sperm protein (MSP) and vitellogenin (Vn). Moreover, OFL and NOR also showed significant trans-generational reproductive toxicities in T4 and T4′, the great-grand-daughter of F1 and F9. Differences between T4 and T4′ and between OFL and NOR, indicated influences of multi-generational exposure and urged more exploration on different mechanisms between FQs. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Safety of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid).

1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. A form in which piperazine is commonly available industrially is as the hexahydrate, C4H10N2. 6H2O, which melts at 44 °C and boils at 125–130 °C. Piperazine is an anthelminthic especially useful in the treatment of partial intestinal obstruction caused by Ascaris worms, which is a condition primarily seen in children. Piperazine hydrate and piperazine citrate are the main anthelminthic piperazines.Safety of 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid

Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics