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On July 2, 2008, Kotachi, Shinji; Fukuda, Kazuyuki published a patent.Name: 2-Methyl-2-propylpropane-1,3-diol The title of the patent was Preparation and process for purifying acetal compounds in presence of antioxidants for perfumes. And the patent contained the following:

The present invention relates to (i) a process for purifying an acetal compound having a sweet floral scent and a process for producing the acetal compound, which are inhibited from generating off-odor even when subjecting the acetal compound to distillation under a low vacuum and at a high temperature; and (ii) a perfume composition containing the acetal compound In accordance with the present invention, there is provided a process for purifying an acetal compound represented by the general formula (I; R1 = H, Me, Et; R2 = Pr, iso-Pr; R3 = H, Pr, iso-Pr), the process including the step of subjecting a raw material containing the acetal compound to distillation at a temperature of 80 to 170° in the presence of an antioxidant. Thus, reaction of 396 g of 2-methyl-2-propyl-1,3-propanediol with 300 g of 2-methylpentanal in presence of 444 g of Et formate resulted in 636 g of a raw material containing 2-(1-methylbutyl)-5-methyl-5-propyl-1,3-dioxane. The raw material (100 g) was mixed with 0.1 g of 2,2′-methylenebis(4-ethyl-6-tert-butylphenol) as an antioxidant, and the mixture was subjected to distillation under such a condition that a main distillate was distilled off under a pressure of 5 to 7 kPa and at a temperature of 138 to 143°, thereby 97 g of a fraction composed of 2-(1-methylbutyl)-5-methyl-5-propyl-1,3-dioxane (purity 98.4%). As a result of analyzing the thus obtained fraction by gas chromatog., it was confirmed that no 2,2-dimethylpentyl-2-methylpentanoate as a byproduct was detected, and no fruity green off-odor was sensed. The experimental process involved the reaction of 2-Methyl-2-propylpropane-1,3-diol(cas: 78-26-2).Name: 2-Methyl-2-propylpropane-1,3-diol

The Article related to acetal compound preparation purification distillation antioxidant perfume, Essential Oils and Cosmetics: Fragrance Preparations and other aspects.Name: 2-Methyl-2-propylpropane-1,3-diol

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Padinjarakoot, Nandagopal; Sabikhi, Latha; Panjagari, Narender R.; Kumar, Ct manoj published an article in 2020, the title of the article was Adsorption isotherm and thermodynamic properties of high fiber reduced calorie multigrain biscuit.Quality Control of SweetPearlR P300 DC Maltitol And the article contains the following content:

A study has been conducted to evaluate the effect of addition of interesterified fat, polydextrose, maltitol, and FOS-sucralose on adsorption isotherm and thermodn. properties of multigrain high fiber reduced calorie biscuits (HFRCB). A static gravimetric method was used over a water activity range of 0.11-0.95 at three different temperatures (25°C, 35°C, and 45°C). The adsorption isotherm of HFRCB showed a slight shift from type II curve to type III. The BET and GAB models were found as the best fitted to the exptl. data. The net isosteric heat of sorption of HFRCB varied from 5.07 to 25.45 kJ/mol. The net isosteric heat of sorption of first water mol. and characteristic moisture content of HFRCB was 27.43 kJ/mol and 0.11 kg/kg dry solids, resp. The spreading pressure increased with increasing water activity and temperature Entropy-Enthalpy compensation theory was evaluated for sorption isotherm of HFRCB at studied exptl. conditions. Practical applications : The study revealed the effect of addition of selected novel ingredients on the sorption properties of biscuit. The study also gives clarity for product developers to cautiously select type and quantity of ingredients. The calculated monolayer moisture content and isosteric heat of sorption can be used for the estimation of energy required during drying, designing of driers, storage condition and shelf life prediction. The experimental process involved the reaction of SweetPearlR P300 DC Maltitol(cas: 585-88-6).Quality Control of SweetPearlR P300 DC Maltitol

The Article related to high fiber calorie multigrain biscuit adsorption isotherm thermodn property, Food and Feed Chemistry: Cereals and Bakery Products and other aspects.Quality Control of SweetPearlR P300 DC Maltitol

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On April 14, 2020, Girard, Henri-Louis; Bourrianne, Philippe; Chen, Dayong; Jaishankar, Aditya; Vreeland, Jessica L.; Cohen, Robert E.; Varanasi, Kripa K.; McKinley, Gareth H. published an article.Formula: C10H22S The title of the article was Asphaltene Adsorption on Functionalized Solids. And the article contained the following:

Asphaltenes, heavy aromatic components of crude oil, are known to adsorb on surfaces and can lead to pipe clogging or hinder oil recovery. Because of their multicomponent structure, the details of their interactions with surfaces are complex. We investigate the effect of the physicochem. properties of the substrate on the extent and mechanism of this adsorption. Using wetting measurements, we relate the initial kinetics of deposition to the interfacial energy of the surface. We then quantify the long-term adsorption dynamics using a quartz crystal microbalance and ellipsometry. Finally, we investigate the mechanism and morphol. of adsorption with force spectroscopy measurements as a function of surface chem. We determine different adsorption regimes differing in orientation, packing d., and initial kinetics on different substrate functionalizations. Specifically, we find that alkane substrates delay the initial monolayer formation, fluorinated surfaces exhibit fast adsorption but low bonding strength, and hydroxyl substrates lead to a different adsorption orientation and a high packing d. of the asphaltene layer. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Formula: C10H22S

The Article related to asphaltene adsorption solid functionalized silicon gold hydroxyl alkane fluorinated, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Formula: C10H22S

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Reddy, Ambavaram Vijaya Bhaskar; Yusop, Zulkifli; Jaafar, Jafariah; Bin Aris, Azmi; Abdul Majid, Zaiton published an article in 2017, the title of the article was A simple, selective, and sensitive gas chromatography-mass spectrometry method for the analysis of five process-related impurities in atenolol bulk drug and capsule formulations.Reference of H-Phg(4-OH)-OH And the article contains the following content:

An extremely sensitive and simple gas chromatog. with mass spectrometry method was developed and completely validated for the anal. of five process-related impurities, viz., 4-hydroxy-L-phenylglycine, 4-hydroxyphenylacetonitrile, 4-hydroxyphenylacetic acid, methyl-4-hydroxyphenylacetate, and 2-[4-{(2RS)-2-hydroxy-3-[(1-methylethyl)amino]propoxy}phenyl]acetonitrile, in atenolol. The separation of impurities was accomplished on a BPX-5 column with dimensions of 50 m × 0.25 mm i.d. and 0.25 μm film thickness. The method validation was performed following International Conference on Harmonisation guidelines in which the method was capable to quantitate 4-hydroxy-L-phenylglycine, 4-hydroxyphenylacetonitrile, and 4-hydroxyphenylacetic acid at 0.3 ppm, and methyl-4-hydroxyphenylacetate and 2-[4-{(2RS)-2-hydroxy-3-[(1-methylethyl)amino]propoxy}phenyl]acetonitrile at 0.35 ppm with respect to 10 mg/mL of atenolol. The method was linear over the concentration range of 0.3-10 ppm for 4-hydroxy-L-phenylglycine, 4-hydroxyphenylacetonitrile, and 4-hydroxyphenylacetic acid, and 0.35-10 ppm for methyl-4-hydroxyphenylacetate and 2-[4-{(2RS)-2-hydroxy-3-[(1-methylethyl)amino]propoxy}phenyl]acetonitrile. The correlation coefficient in each case was found ≥0.998. The repeatability and recovery values were acceptable, and found between 89.38% and 105.60% for all five impurities under optimized operating conditions. The method developed here is simple, selective, and sensitive with apparently better resolution than the reported methods. Hence, the method is a straightforward and good quality control tool for the quantitation of selected impurities at trace concentrations in atenolol. The experimental process involved the reaction of H-Phg(4-OH)-OH(cas: 32462-30-9).Reference of H-Phg(4-OH)-OH

The Article related to atenolol impurity analysis gc ms, beta-blockers, genotoxicity, mass spectrometry, method validation, Pharmaceutical Analysis: Synthetic Organic Compounds and other aspects.Reference of H-Phg(4-OH)-OH

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On February 9, 2021, Bhadra, Pratiti; Siu, Shirley W. I. published an article.Formula: C10H22S The title of the article was Effect of Concentration, Chain Length, Hydrophobicity, and an External Electric Field on the Growth of Mixed Alkanethiol Self-Assembled Monolayers: A Molecular Dynamics Study. And the article contained the following:

Growing functionalized self-assembled monolayers (SAMs) with fewer defects and lower cost is the focus of ongoing investigations. In the present study, mol. dynamics simulations were performed to investigate the process of SAM formation on a gold substrate from mixed alkanethiolates in ethanol solution Using the mixed-SAM system of 11-mercaptoundecanoic acid (MUA) with either 1-decanethiol (C9CH3) or 6-mercaptohexanol (C6OH) in a 3:7 ratio as the standard SAM model, we systematically investigated the effects of the concentration, chain length, functional group, and an external elec. field on SAM growth. The results showed that the initial growth rate and surface coverage of the SAM are dependent on the ligand concentration At a certain high concentration (about 1.2-1.5 times the min. concentration), the final surface coverage is optimal. Reducing the chain length and increasing the proportion of hydrophobic diluting mols. are effective ways to improve the surface coverage, but the compositional ligands have to be changed, which may not be desirable for the functional requirements of SAMs. Furthermore, by investigating the behavior of the alkanethiolates and ethanol solvent under an applied external field, we find that a strong elec. field with a proper field direction can facilitate the generation of defect-free monolayers. These findings will contribute to the understanding of mixed-SAM formation and provide insight into exptl. design for efficient and effective SAM formation. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Formula: C10H22S

The Article related to hydrophobicity alkanethiol self assembled monolayer md simulation, external elec field concentration, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Formula: C10H22S

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On November 20, 2002, Bazylak, Grzegorz; Nagels, Luc J. published an article.Name: 2,2′-(tert-Butylazanediyl)diethanol The title of the article was Potentiometric detection of N,N’-diethylaminoethanol and lysosomotropic amino alcohols in cation-exchange high-performance liquid-chromatography systems. And the article contained the following:

Potentiometric detection of N,N’-diethylaminoethanol (DEAE) and a series of related physiol. relevant lysosomotropic amino alcs. was carried out by cation-exchange HPLC. Poly(vinyl chloride) (PVC)-based liquid membrane electrode coatings were used which contained the lipophilic cation exchanger tetrakis(p-chlorophenyl)borate (TCPB) either alone or in combination with one of the macrocyclic ionophores hexakis-(2,3,6-tri-O-octyl)-α-cyclodextrin (CDX), dibenzo-18-crown-6 (CRW) or calix[6]arene hexaethylacetate ester (CLX). With all the PVC membrane electrodes used, improved sensitivity over UV detection at 210 nm was obtained for the aliphatic amino alcs. analyzed. Especially, addition of CLX to the PVC-based membrane led to highly enhanced detection limits for the lower-mol.-weight lysosomotropic amino compounds, i.e., aminoethanol and methylamine. The performance of the proposed potentiometric detection method was demonstrated in cation-exchange HPLC modes employing two different aqueous mobile phase systems with pH 2.30 comprising H3PO4 or HOAc with MeCN as organic modifier. Detection limits of 1.1 × 10-8 and 2.4 × 10-8M (injected concentrations) were achieved for N-methylaminoethanol and hexylamine, resp., by using a CLX-based electrode. Sensitive and reliable determination of DEAE, a local anesthetic agent, after liquid-liquid or solid-phase extraction from fortified bovine serum samples was obtained with the HPLC method coupled with the proposed potentiometric detection system. A linear free-energy relationship based on a general solvation equation was used to predict detection limits of amino alcs. from their mol. structure in the potentiometric detectors employing CLX and CRW. The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Name: 2,2′-(tert-Butylazanediyl)diethanol

The Article related to amino alc determination hplc potentiometry, diethylaminoethanol determination blood liquid chromatog potentiometry, Pharmaceutical Analysis: Synthetic Organic Compounds and other aspects.Name: 2,2′-(tert-Butylazanediyl)diethanol

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On September 27, 2022, Soh, Eugene Jia Hao; Astier, Hippolyte P. A. G.; Daniel, Dan; Isaiah Chua, Jia Qing; Miserez, Ali; Jia, Zian; Li, Ling; O’Shea, Sean J.; Bhaskaran, Harish; Tomczak, Nikodem; Nijhuis, Christian A. published an article.Recommanded Product: 1-Decanethiol The title of the article was AFM Manipulation of EGaIn Microdroplets to Generate Controlled, On-Demand Contacts on Molecular Self-Assembled Monolayers. And the article contained the following:

Liquid metal droplets, such as eutectic gallium-indium (EGaIn), are important in many research areas, such as soft electronics, catalysis, and energy storage. Droplet contact on solid surfaces is typically achieved without control over the applied force and without optimizing the wetting properties in different environments (e.g., in air or liquid), resulting in poorly defined contact areas. In this work, we demonstrate the direct manipulation of EGaIn microdroplets using an at. force microscope (AFM) to generate repeated, on-demand making and breaking of contact on self-assembled monolayers (SAMs) of alkanethiols. The nanoscale positional control and feedback loop in an AFM allow us to control the contact force at the nanonewton level and, consequently, tune the droplet contact areas at the micrometer length scale in both air and ethanol. When submerged in ethanol, the droplets are highly nonwetting, resulting in hysteresis-free contact forces and minimal adhesion; as a result, we are able to create reproducible geometric contact areas of 0.8-4.5μm2 with the alkanethiolate SAMs in ethanol. In contrast, there is a larger hysteresis in the contact forces and larger adhesion for the same EGaIn droplet in air, which reduced the control over the contact area (4-12μm2). We demonstrate the usefulness of the technique and of the gained insights in EGaIn contact mechanics by making well-defined mol. tunneling junctions based on alkanethiolate SAMs with small geometric contact areas of between 4 and 12μm2 in air, 1 to 2 orders of magnitude smaller than previously achieved. The experimental process involved the reaction of 1-Decanethiol(cas: 143-10-2).Recommanded Product: 1-Decanethiol

The Article related to gallium indium eutectic microdroplet afm self assembly monolayer, egain, atomic force microscopy, liquid metal, micromanipulation, molecular electronics, Surface Chemistry and Colloids: Solid-Liquid Systems and other aspects.Recommanded Product: 1-Decanethiol

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On October 15, 2022, Michailidis, Michail; Titeli, Vaia Styliani; Karagiannis, Evangelos; Feidaki, Kyriaki; Ganopoulos, Ioannis; Tanou, Georgia; Argiriou, Anagnostis; Molassiotis, Athanassios published an article.Name: 2,3-Dihydroxypropanoic acid The title of the article was Tissue-specific transcriptional analysis outlines calcium-induced core metabolic changes in sweet cherry fruit. And the article contained the following:

The role of calcium in fruit ripening has been established, however knowledge regarding the mol. anal. at fruit tissue-level is still lacking. To address this, we examined the impact of foliar-applied calcium (0.5% CaCl2) in the ripening metabolism in skin and flesh tissues of the sweet cherry ‘Tragana Edessis’ fruit at the harvest stage. Exogenously applied calcium increased endogenous calcium level in flesh tissue and reduced fruit respiration rate and cracking traits. Fruit metabolomic along with transcriptomic anal. unraveled common and tissue-specific metabolic pathways associated with calcium feeding. Treatment with calcium diminished several alcs. (arabitol, sorbitol), sugars (fructose, maltose), acids (glyceric acid, threonic acid) and increased ribose and proline in both fruit tissues. Moreover, numerous primary metabolites, such as proline and galacturonic acid, were differentially accumulated in calcium-exposed tissues. Calcium-affected genes that involved in ubiquitin/ubl conjugation and cell wall biogenesis/degradation were differentially expressed between skin and flesh samples. Notably, skin and flesh tissues shared common calcium-responsive genes and exhibited substantial similarity in their expression patterns. In both tissues, calcium activated gene expression, most strongly those involved in plant-pathogen interaction, plant hormone signaling and MAPK signaling pathway, thus affecting related metabolic processes. By contrast, calcium depressed the expression of genes related to TCA cycle, oxidative phosphorylation, and starch/sucrose metabolism in both tissues. This work established both calcium-driven common and specialized metabolic suites in skin and flesh cherry tissues, demonstrating the utility of this approach to characterize fundamental aspects of calcium in fruit physiol. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Name: 2,3-Dihydroxypropanoic acid

The Article related to sweet cherry fruit calcium metabolic change tissue transcriptional analysis, calcium, flesh and skin tissues, metabolomic, sweet cherry fruit, transcriptomic, Plant Biochemistry: Classical Genetics and Phylogeny and other aspects.Name: 2,3-Dihydroxypropanoic acid

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Marzec, Agata; Kowalska, Jolanta; Domian, Ewa; Galus, Sabina; Ciurzynska, Agnieszka; Kowalska, Hanna published an article in 2021, the title of the article was Characteristics of Dough Rheology and the Structural, Mechanical, and Sensory Properties of Sponge Cakes with Sweeteners.Computed Properties of 585-88-6 And the article contains the following content:

Changes in the rheol. properties of dough, as well as the microstructural, mech., and sensory properties of sponge cakes, as a function of the substitution of sucrose in a formulation with maltitol, erythritol, and trehalose are described. Moreover, the relationship between the examined properties was investigated. The replacement of sucrose with maltitol or trehalose did not affect the consistency index, whereas erythritol caused a decrease in its value. X-ray tomog. was used to obtain the 2D and 3D microstructures of sponge cakes. All studied sweeteners caused the sponge cakes to have a typical porous structure. Erythritol and maltitol resulted in about 50% of the pores being smaller than 0.019 mm2 and 50% of the pores being larger than 0.032 mm2. Trehalose resulted in a homogeneous microstructure, 98% of whose pores were similar in size (0.019 to 0.032 mm2). The sponge cakes with polyols had a higher structure index than did the trehalose and sucrose samples. There were also significant differences in color parameters (lightness and chromaticity). The crust of the sponge cake with sweeteners was lighter and had a less saturated color than the crust of the sponge cake with sucrose. The sponge cake with maltitol was the most similar to the sponge cake with sucrose, mainly due to the mech. and sensory properties. Trehalose led to the samples having high adhesiveness, which may limit its application as a sucrose substitute in sponge cake. Sensory properties were strongly correlated to cohesiveness, adhesiveness, and springiness and did not correlate to the 2D and 3D microstructures. It was found that 100% replacement of sucrose allows for a porous structure to be obtained. These results confirm that it is not the structure, but most of all the flavor, that determines the sensory perception of the sponge cakes. The experimental process involved the reaction of SweetPearlR P300 DC Maltitol(cas: 585-88-6).Computed Properties of 585-88-6

The Article related to sucrose erythritol maltitol trehalose texture microstructure dough sponge cake, color, erythritol, maltitol, microtomography, sponge cakes, texture, trehalose, Food and Feed Chemistry: Cereals and Bakery Products and other aspects.Computed Properties of 585-88-6

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On November 30, 2008, Henriks-Eckerman, Maj-Len; Suuronen, Katri; Jolanki, Riitta published an article.Synthetic Route of 4719-04-4 The title of the article was Analysis of allergens in metalworking fluids. And the article contained the following:

Background: Metalworking fluids (MWFs) are well-known causes of occupational contact dermatitis in machinists. Objective: To gain information about skin sensitizers in MWFs and to compare it with the information in safety data sheets (SDSs). Methods: A total of 17 samples of MWF concentrates were analyzed for skin sensitizers known or suspected to be used in MWF. Alkanolamines, formaldehyde, isothiazolinones, methyldibromo glutaronitrile (MDBGN), and iodopropynyl butylcarbamate (IPBC) were separated by liquid chromatog. Resin acids of colophonium (colophony) were separated by gas chromatog. The substances were identified with mass spectrometric detection and UV detection. Results: Of the MWFs, 15 contained 6-39% of alkanolamines, mostly monoethanolamine and triethanolamine. Formaldehyde was detected in all MWFs: the concentrations of total formaldehyde ranged between 0.002% and 1.3%. Benzisothiazolinone and octylisothiazolinone were detected in one fluid each. IPBC was detected in nine MWFs, and the highest concentration was 0.09%. Methylisothiazolinone and MDBGN were not detected in any of the fluids. Resin acids of colophonium were detected in seven MWFs in concentrations ranging from 0.41% to 3.8%. On the whole, the allergens analyzed were poorly declared in the SDSs. Conclusions: The content of total formaldehyde was not declared in any SDS. IPBC, a relatively new allergen, seems to be common in MWFs. Isothiazolinones may be relevant allergens of machinists, and they should be analyzed in MWFs in case other sources are not identified. The occupational relevance of pos. patch test results to MWF ingredients in machinists is difficult to determine if information in the SDSs is relied upon. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Synthetic Route of 4719-04-4

The Article related to metalworking fluid allergen, Toxicology: Chemicals (Household, Industrial, General) and other aspects.Synthetic Route of 4719-04-4

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