Category: 123-39-7

Li, Jianwei published the artcileEvaluation of blood simulating solvents in extractables and leachables testing for chemical characterization of medical devices based on Abraham general solvation model, Recommanded Product: N-Methylformamide, the main research area is blood simulating solvents extract chem characterization medical device.

Extraction vehicles (simulating solvents) used in chem. characterization (i.e., extractables/leachables testing) of blood-contacting medical devices for biocompatibility assessment per ISO 10993 have been studied by Abraham general solvation models. Chem. equivalent solvents to blood in solvation properties (solubility, partition, extraction, etc.) have been proposed based on Abraham’s organic solvent system coefficients for water and air to condensed organic solvent phases. This evaluation is built upon the conclusion by Abraham, Acree Jr and Cometto-Munĩz that water saturated n-butanol (called wet n-butanol) is chem. corresponding to blood. Although wet n-butanol can be directly used to replace blood in an extraction study (such as a simulated-use extraction study per ISO 10993-18 (2020)), it can be beneficial to have alternate solvents to wet n-butanol (butan-1-ol) when chromatog. interference is practically significant. By comparing Abraham solvent system coefficients for water to condensed organic solvent phases distribution, a five-dimensional space distance (D) between solvents and reference solvent (wet n-butanol) is calculated using Abraham and Martin equation to predict equivalent or similar solvents (to wet n-butanol). It is concluded from the study that ethanol/water (60/40, V/V) and ethanol/water (50/50, V/V) are chem. equivalent or quite similar to wet n-Butanol. Other two less similar solvents are ethylene glycol and ethanol/water (70/30, V/V). Thus, n-butanol, ethanol/water (60/40, V/V) and ethanol/water (50/50, V/V) can be used as blood simulating solvents in chem. characterization study of medical device. In certain situations, ethylene glycol might be desirable as an alternate solvent, as it is not a mixture As Abraham solvation model is general (solvent system specific, not solute specific), the conclusions from this study are considered as universal.

Journal of Molecular Liquids published new progress about Biocompatibility. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Recommanded Product: N-Methylformamide.

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

DeGreeff, Lauryn E. published the artcileCanine olfactory detection of trained explosive and narcotic odors in mixtures using a Mixed Odor Delivery Device, Recommanded Product: N-Methylformamide, the main research area is canine olfactory detection trained explosive narcotic odor delivery device; Canine olfaction detection; Explosives detection; Headspace analysis; Narcotics detection; SPME-GC/MS.

Like using a substandard calibrant to test and calibrate an instrumental detector, when detection canines are regularly exposed to less than optimal training material, their detection proficiency is diminished, risking the lives of their handlers and civilians they are intended to protect. This research examined canine detection proficiency to odor mixtures and the use of mixture training to improve said proficiency. Trained detection canines were tested on their ability to correctly locate their trained target odors, explosives or narcotics, in various mixtures from a series of blanks and distractor odors. After making base measurements, canines were trained on the target odor in mixtures using the Mixed Odor Delivery Device (MODD), which was previously developed to safely contain separated explosive components and deliver the mixed odor to a canine detector for training purposes. Headspace measurements, made using solid phase microextraction with gas chromatog./mass spectrometry (SPME-GC/MS), were also taken of mixture components in and out of the MODD to confirm that odor mixtures were accurately portrayed to the canines during MODD training. Following mixture training, canines were retested on the same mixtures Results of the headspace anal. showed that the MODD did not alter the delivery of the odorants from the mixture components. As such, canines showed an improved proficiency in detection of target mixtures following mixture training, increasing the detection rate from 63% to 72% for pseudo cocaine mixtures and from 19% to 100% for explosive mixtures

Forensic Science International published new progress about Canis familiaris. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Recommanded Product: N-Methylformamide.

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

Zhang, Bin published the artcileTwo Robust In(III)-Based Metal-Organic Frameworks with Higher Gas Separation, Efficient Carbon Dioxide Conversion, and Rapid Detection of Antibiotics, COA of Formula: C2H5NO, the main research area is indium pyridyltetracarboxylate MOF preparation fluorescent sensor gas adsorption; cycloaddition catalyst indium pyridyltetracarboxylate MOF; crystal structure indium pyridyltetracarboxylate MOF.

With the aid of a pyridyl tetracarboxylate ligand, 2,5-bis(2′,5′-dicarboxylphenyl)pyridine (H4L), two indium-organic frameworks, [In2(L)(OH)2]·2DMF·2H2O (1) and [Me2NH2][In(L)]·2.5NMF·4H2O (2), with (6,8)- and (4,4)-connected nets have been constructed in different solvent systems. Both 1 and 2 exhibit high thermal and chem. stability. Gas sorption behavior of 1 and 2 for N2, C2H2, C2H4, CO2, and CH4 indicate excellent separation selectivities of C2Hx/CH4 and CO2/CH4. Furthermore, 1 possesses a high d. of Bronsted sites and shows efficient catalytic conversion for CO2 cycloaddition with epoxides. Meanwhile, luminescence investigations reveal that 2 can detect nitrofurazone efficiently. Two robust In(III)-based metal-organic frameworks with highly selective adsorption of C2H2, C2H4, and CO2 over CH4 have been rationally constructed. Especially, 1 possesses a high d. of Bronsted sites and can be used as an efficient heterogeneous catalyst to achieve the conversion of CO2, while 2 exhibits low detection limit, rapid response, and unique antiinterference ability toward nitrofurazone.

Inorganic Chemistry published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, COA of Formula: C2H5NO.

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

Deng, Lan published the artcileIntrinsic Molybdenum-Based POMOFs with Impressive Gas Adsorptions and Photochromism, Quality Control of 123-39-7, the main research area is molybdenum oxo triazole POM preparation ESR; crystal structure molybdenum oxo triazole POM; gas adsorption; oxidomolybdenum; photochromic; polyoxometalate organic frameworks; triazoles.

Novel molybdenum(VI/V) POM-based self-constructed frameworks [MoVI12O24(μ2-O)12(trz)6(H2O)6]·6Hma·18H2O (1, Htrz = 1H-1,2,3-triazole, ma = methylamine), [MoVI7O14(μ2-O)8(trz)5(H2O)]·7Hma·5H2O (2), Na3[MoV6O6(μ2-O)9(Htrz)3(trz)3]·7.5H2O (3) and [MoV8O8(μ2-O)12(Htrz)8]·30H2O (4) were covalently decorated with tri-coordinated deprotonated/protonated 1,2,3-triazoles. Channels with an inner diameter of 7.5 S were found in 1, whereas a tunnel composed of stacking mols. with an inner diameter of 4.1 S along the b-axis exists in 2; it is occupied by free disordered methylamines, showing selective adsorption of O2 and CO2 at 25°C. Obvious downfield shifts were observed by 13C NMR spectroscopies for methylamines inside the confined channels in 1 and 2. There are diversified pores in 3 and 4, which are formed by the mols. themselves and intermol. accumulations. Adsorption tests indicate that 3 and 4 are fine adsorption materials for CH4 and CO2 under low pressure that rely on the environments built by the POMs. Correspondingly, 1 and 2 display reversible photoresponsive thermochromism that is subtlety influenced by the channels. The polyoxometalate organic frameworks (POMOFs) with multiple functional adsorptions are easy to assemble. Their photo-/thermoresponse properties offer a new pathway for the self-constructions of one-off hybrid materials that possess the good properties of both POMs and MOFs.

Chemistry – A European Journal published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Quality Control of 123-39-7.

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

Chu, Qianqian published the artcileEffective C2H2 Separation and Nitrofurazone Detection in a Stable Indium-Organic Framework, Related Products of amides-buliding-blocks, the main research area is indium carboxylphenylfluorobenzene terephthalate MOF preparation fluorescent sensor thermal stability; gas adsorption indium carboxylphenylfluorobenzene terephthalate MOF; crystal structure indium carboxylphenylfluorobenzene terephthalate MOF.

Based on the mixed carboxylate ligands synthesis strategy, an indium-organic framework, (Me2NH2)1.5[In1.5(FBDC)(BDC)]·2.5NMF·CH3CN (1) has been constructed by using the mixed 2,5-di(2′,5′-dicarboxylphenyl)-difluorobenzene (H4FBDC) and terephthalic acid (H2BDC). Compound 1 contains a 3D intersecting pore system which surface is modified by F atoms, and it has excellent stability in pH = 2-12 aqueous solutions The activated 1 shows high separation for C2H2/CO2 and C2H2/CH4. Moreover, 1 not only has strong luminescence but also has the high selectivity and sensibility of fluorescence detection to nitrofurazone (NZF) in antibiotic sensing experiments, which can be used as a luminescence sensor for NZF detection. A stable F-modified indium-organic framework (1) with 3D intersecting pore system has been synthesized. Compound 1 not only possesses a highly selective adsorption of C2H2 over CO2 and CH4 gases but also has an outstanding selective recognition of NZF in water.

Inorganic Chemistry published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Related Products of amides-buliding-blocks.

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

Bhargao, Pooja H. published the artcileSynthesis and structural characterization of a barium coordination polymer based on a μ2-monoatomic bridging 4-nitrobenzoate, SDS of cas: 123-39-7, the main research area is crystal structure barium nitrobenzoate methylformamide coordination polymer; barium nitrobenzoate methylformamide polymer preparation fluorescence thermal decomposition.

The synthesis, spectral characterization, crystal structure and properties of [Ba(H2O)2(NMF)2(4-nba)2], (1; NMF = N-methylformamide; 4-nba = 4-nitrobenzoate), are reported. 1H and 13C NMR spectral data reveal NMF in 1. A strong band at 1660 cm-1 in the IR spectrum indicates the binding of amide O to Ba(II) which is confirmed by the single crystal structure. The unique Ba(II) in situated on a mirror plane exhibits nine coordination and is bonded to two symmetry related monodentate terminal NMF ligands via the amide O, and a terminal aqua ligand. The μ2-monoat. bridging binding mode of each of a crystallog. independent 4-nba ligand and a unique H2O ligand link the Ba(II) cations into an infinite chain extending along a, giving a 1-dimensional coordination polymer with Ba···Ba separations of 4.2522(3) Å. In the chain, the {BaO9} polyhedra are linked in a face sharing fashion. Thermal decomposition of gave BaCO3 residue. A comparative study of the structural chem. of several Ba coordination polymers is described.

Journal of Coordination Chemistry published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, SDS of cas: 123-39-7.

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

Zhu, Yueying published the artcileTwo Robust Isoreticular Metal-Organic Frameworks with Different Interpenetration Degrees Exhibiting Disparate Breathing Behaviors, Synthetic Route of 123-39-7, the main research area is bismuth indium terphenyltricarboxylato complex preparation crystal structure gas adsorption.

Herein, two robust isoreticular metal-organic frameworks (MOFs), ([Bi(CPTTA)]·[Me2NH2]·2DMF) (JLU-MOF120, H4CPTTA = 5′-(4-carboxyphenyl)-[1,1′:3′,1”-terphenyl]-3,4”,5-tricarboxylic acid, DMF = N, N- DMF) and ([In(CPTTA)]·[MeNH3]·2.5H2O·1.5NMF) (JLU-MOF121, NMF = N- methylformamide), with different interpenetration degrees were successfully constructed. According to the hard-soft acid-base (HSAB) theory, high-valent metal ions and carboxylate-based ligands were selected and formed 2-fold interpenetrated structures with saturated coordinated mononuclear second building units ([M(COO)4], M = Bi, In). Owing to the features of the frameworks, JLU-MOF120 and JLU-MOF121 exhibited excellent stability, which could retain their integrity in water for at least 14 days and aqueous solutions with a pH range of 3-11 for at least 24 h. According to the structural regulation strategy, by changing the torsion angles of the ligand, the degrees of interpenetration for JLU-MOF120 and JLU-MOF121 were different, leading to various gate-opening pressures in CO2 at 195 K. Also, JLU-MOF120 exhibits the scarce potential of C2H2/CO2 separation among Bi-MOF materials at 298 K under 101 kPa, JLU-MOF121 shows high CO2/CH4 selectivity under ambient conditions (11.7 for gas mixtures of 50 and 50% and 16.1 for gas mixtures of 5 and 95%). Also, owing to the flexibility of the structure, JLU-MOF121 possesses disparate breathing behaviors for C2H2 and C2H6 at 273 and 298 K, with the differences in uptakes among C2 hydrocarbons resulting in the potentiality of C2H4 purification Overall, such HSAB theory and the structural regulation strategy could provide a valid method for constructing stable and flexible structures for the application in gas separation

Inorganic Chemistry published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Synthetic Route of 123-39-7.

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

Li, Jiantang published the artcileSupramolecular interactions induced distortion of BTB ligands: breaking convention to reproduce an unusual (3,4,4)-connected MOF topology, Formula: C2H5NO, the main research area is benzene triyltribenzoate copper MOF preparation crystal mol structure; supramol distortion BTB ligand breaking convention connected MOF topol.

An unusual (3,4,4)-connected MOF topol. has been reproduced by a 4,4′,4”-benzene-1,3,5-triyl-tribenzoate (BTB) ligand which was previously judged to be not feasible to form this network. The outcome demonstrates that supramol. interactions play a key role in the formation of this highly distorted network. Moreover, this triple interpenetrated framework exhibits high BET surface area.

Dalton Transactions published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Formula: C2H5NO.

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

Lin, Li-Dan published the artcileA new type of composite MOFs based on high-valent Sb(V)-based units and cuprous-halide clusters, Category: amides-buliding-blocks, the main research area is antimony copper hydroxymethylpyridinylpropanediol MOF preparation; crystal structure antimony copper hydroxymethylpyridinylpropanediol MOF.

An unusual high-valent Sb(V)-based unit [SbL2]- (L = 2-(hydroxymethyl)-2-(pyridin-4-yl)-1,3-propanediol) was developed for the 1st time to combine with various cuprous-halide clusters for the construction of a brand-new class of heterometallic MOFs. This work not only promotes the limited development of Sb-based MOFs, but also provides a practical strategy for developing new types of composite materials.

Chemical Communications (Cambridge, United Kingdom) published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Category: amides-buliding-blocks.

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

Wied, Jan K. published the artcileVolume Increments for Crystalline Borates, COA of Formula: C2H5NO, the main research area is preparation methylformamide borate volume increment unit cell coordination geometry.

A set of volume increments for ionic oxido-borates is developed for trigonal-planar and tetrahedral coordinated boron fragments in densely packed crystal structures. For this purpose, the cell volume of 277 alk.- and earth alk. borate structures was analyzed with respect to the volume of different anionic borate building units. The volume increments help to determine the number of formula equivalent in a cell which is especially useful for the structure solution process starting from powder diffraction data. This was demonstrated on a new methylammonium borate, [H3CNH3]B5O6(OH)4·CH3NHCOH which could be solved from powder x-ray diffraction data. The compound crystallizes in the monoclinic space group P1 21/c 1 with a = 7.3040(1) S, b = 11.6377(1) S, c 17.1065(3) S, β 107.2167(9)° and Z = 4. The structure model is supported as well by 1H, 11B, 13C and 15N solid-state NMR and quantum chem. calculations

European Journal of Inorganic Chemistry published new progress about Crystal structure. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, COA of Formula: C2H5NO.

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