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bisphenol A diglycidyl ether, bisphenol F diglycidyl ether, bisphenol S diglycidyl ether, brominated bisphenol A diglycidyl ether, brominated bisphenol F diglycidyl ether, brominated bisphenol S diglycidyl ether, hydrogenated bisphenol A diglycidyl ether, hydrogenated bisphenol F diglycidyl ether, hydrogenated bisphenol S diglycidyl ether, 1,4-butanediol diglycidyl ether, 1,6-hexanediol diglycidyl ether, glycerol triglycidyl ether, trimethylolpropane triglycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ethers; polydiglycidyl ethers of polyether polyol obtained by adding one or more alkylene oxides to an aliphatic polyhydric alcohol such as ethylene glycol, propylene glycol, and glycerol; diglycidyl esters of an aliphatic long-chain dibasic acid; mono-diglycidyl ethers of aliphatic higher alcohol; phenol, cresol, butyl phenol, or mono-glycidyl ethers of polyether alcohol obtained by adding an alkylene oxide to these; glycidyl esters of a higher fatty ...
Copolymers of glycidyl methacrylate and allyl glycidyl ether having pendant epoxy groups, having an inherent viscosity of at least about 0.25, preferably within the range of about 0.25 to about 0.38, and an epoxy equivalent of at least about 0.65 epoxide equivalent per 100 g. of polymer are provided which upon admixture with a radiation-sensitive aryldiazonium salt provide compositions which exhibit improved sensitivity, curing rates and other properties. Articles for recording and storing information from a laser source and other articles such as microfilm are derived from such compositions by subjecting a coated substrate to an energy source of sufficient intensity to decompose the radiation-sensitive catalyst and thus effect polymerization via the epoxy groups of the copolymer.
Data & statistics on Bisphenol F Diglycidyl Ether: Bisphenol A diglycidyl ether and its oligomers are major components of epoxy resins. Epoxy resins based on bisphenol A diglycidyl ether are widely used in protective coatings, including paints, in reinforced plastic laminates and composites, in tooling, casting and moulding resins, in bonding materials and adhesives, and in flooring and aggregates. : C21H24O4, COMPOUND BIS(DIMETHYL THIOCARBAMYL)DISULFIDE BIS(DIMETHYLAMINO)BENZOPHENONE, 4,4- BIS(P-TERT-BUTYLPHENYL) PHENYL PHOSPHATE BIS-(1,4-DIMETHYLPENTYL)P-PHENYLENEDIAMINE, N,N- 3081-14-9 BIS-DIETHYLENE GLYCOL MONOETHYL ETHER PHTHALATE BIS[2-(2-CHLOROETHOXY)ETHYL] ETHER BISPHENOL A DIGLYCIDYL ETHER BITUMEN BLEOMYCINS BORAX, ANHYDROUS (SODIUM BORATE ANHYDROUS) 1303-96-4 BORAX, DECAHYDRATE BORAX,PENTAHYDRATE ..., Bisphenol F diglycidyl ether (BFDGE)...
... CAS No.: 91722-14-4 Other Names: Epoxidized Soyabean Oil Acrylate (... Type: oligomer Purity: pure Contact SupplierSpecificationsLow visco
Problem statement: This study was carried out for the characterization of epoxidized and non-epoxidized fatty diethanolamides by High Performance Liquid Chromatography (HPLC) and Gas Chromatography (GC). Approach: The fatty diethanolamides were synthesized by reacting 40% (w/w) of Epoxidized Palm Olein (EPOo) with 60% (w/w) Refined Bleached Deodorized Plam Kernel Olein (RBDPKOo) with Diethanolamine (DEA) at 110°C for 5 h. Results: The identities of the peaks were established by secondary standards that were derived from pure methyl esters. HPLC separated major non-epoxidized diethanolamide compounds, namely C10:0, C12:0, C14:0, C16:O, C18:1 and C18:0 and the molecular weights of the compounds were dentified by Liquid Chromatography-Mass Spectrometry (LC-MS). Conclusion: GC provided a more complete separation for the non-epoxidized diethanolamides, epoxidized diethanolamides, glycerol, Diethanolamine (DEA) and some minor compounds from the self-condensation of DEA and diethanolamides. Gas
TY - JOUR. T1 - Enolate and Other Carbon Nucleophile Alkylation Reactions using 1,2-Cyclic Sulfates as Terminal Epoxide Equivalents. AU - Hoye, Thomas R. AU - Crawford, Khushrav B.. PY - 1994/2/1. Y1 - 1994/2/1. N2 - Enolates of esters and amides as well as α-sulfonyl-, α-cyano-, and α-phosphonyl-substituted anions react with cyclic sulfate 1 to give hydroxylated products arising from nucleophilic attack, on this terminal epoxide equivalent, at the primary carbon.. AB - Enolates of esters and amides as well as α-sulfonyl-, α-cyano-, and α-phosphonyl-substituted anions react with cyclic sulfate 1 to give hydroxylated products arising from nucleophilic attack, on this terminal epoxide equivalent, at the primary carbon.. UR - http://www.scopus.com/inward/record.url?scp=0012518614&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0012518614&partnerID=8YFLogxK. U2 - 10.1021/jo00082a005. DO - 10.1021/jo00082a005. M3 - Letter. AN - SCOPUS:0012518614. VL - 59. SP - 520. EP - ...
Hemoglobin adduct measurements provide a useful tool for the development of models for risk assessment of chemicals. The measurements can be used to identify reactive metabolites and to determine the in vivo doses of these metabolites. Thus, the need to use default assumptions with regard to animal metabolism and dose-response relationships can be reduced. The research presented here involved the study of a number of important industrial chemicals, primarily 1,3-butadiene, glycidyl ethers, acrylonitrile and acrylamide. Many of these chemicals were shown to be mutagenic in several tests (in vivo/in vitro) and are carcinogenic in experimental animals. The compounds or their metabolites have the ability to react with DNA to form adducts. Formation of such adducts is believed to be responsible for the development of mutation and cancer. The main aim has been to study relationships between exposure and in vivo dose. In some cases analytical methods to measure hemoglobin adducts were already available ...
The proposed biosynthetic pathways to ladder polyethers of polyketide origin and oxasqualenoids of terpenoid origin share a dramatic epoxide-opening cascade as a key step. Polycyclic structures generated in these biosynthetic pathways display biological effects ranging from potentially therapeutic properties to extreme lethality. Much of the structural complexity of ladder polyether and oxasqualenoid natural products can be traced to these hypothesized cascades. In this review we summarize how such epoxide-opening cascade reactions have been used in the synthesis of ladder polyethers and oxasqualenoid natural products.
TABLE-US-00002 [0149]TABLE 1 Crosslinking Weight loss Weight loss R/RD/CA/C start at 400° C. at 400° Reactive diluent Crosslinking Catalyst (parts by temperature after cycle after cycle Ex. Resin (R) (RD) agent (CA) (C) weight) (° C.) 1 (%) 2 (%) 1 BADGE.sup.(1) furfuryl alcohol -- 2MI 90/10/0/2 84 9.4 n.d. 2 BADGE.sup.(1) 1,4-butanediol -- 2MI 90/10/0/2 90 n.d. 20.4 diglycidyl ether.sup.(3) 3 BADGE.sup.(1) 1,6-hexanediol -- 2MI 90/10/0/2 99 n.d. 31.3 diglycidyl ether.sup.(6) 4 BADGE.sup.(1) epoxidized -- 2MI 90/10/0/2 93 n.d. 12.9 cardanols.sup.(4) 5 BADGE.sup.(1) CNSL.sup.(5) -- 2MI 90/10/0/2 93 12.7 n.d. 6 BADGE.sup.(1) glyoxal -- 2MI 90/10/0/2 132 49.9 n.d. 7 BADGE.sup.(1) bisoxazolidine.sup.(8) -- 2MI 90/10/0/2 n.d. n.d. 18.8 8 epoxidized Furfuryl alcohol -- 2MI 70/30/0/2 n.d. 16.0 n.d. novolac.sup.(2) 9 epoxidized Furfuryl alcohol 3-ethyl-2- -- 50/20/30/0 250 n.d. 33.4 novolac.sup.(2) methyl(3- methylbutyl)- 1,3- oxazolidine.sup.(7) 10 epoxidized Furfuryl alcohol 1,3-PBO -- 50/20/30/0 ...
This work describes a general protocol for the oxidation of indole and oxindole derivatives with dimethyldioxirane to give 3-hydroxyoxindoles present in many naturalproducts. This strategy allowed us to synthesize the naturalproduct1, to carry out the first total synthesis of 4, a formal total synthesis of donaxaridine (5) and to achieve the synthesis of pyrroloindoline 8, a debromo analogue of the naturalproduct flustraminol B (7). ...
The Global Epoxidized Soybean Oil Market Research Report is an all-inclusive study comprising insightful market intelligence, profound inputs from industry experts, and reliable predictions based on the industry performance. The report minutely analyzes market demand, scope, potential, contemporary trends, maturity, and profitability. The overall global Epoxidized Soybean Oil market structure has also been examined in the report […]. ...
Molecular Formula : C57H106O10 Physicochemical Properties : Epoxidized Soybean Oil is a kind of slight yellow viscous oily liquid , with viscosity of 325mpa.s, refractive index of 1.473 and density of 0.985 . Epoxidized Soybean Oil is not...
[102 Pages Report] Check for Discount on Global Epoxidized Soybean Oil Acrylate Market Research Report 2017 report by QYResearch Group. In this report, the global Epoxidized Soybean Oil Acrylate market...
Epoxidized palm oil (EPO) based polyols were produced from three different molar ratios of EPO and glycerol (1:1.0, 1:1.5, 1:2.0) via hydroxylation reaction. The reduction of oxirane content from 2.9 to 0.04%, the increase in hydroxyl value to 509.6 mgKOH/g and high viscosity of synthesized polyols indicates the opening of epoxy ring and also showed the grafting process had been occurred. Based on FTIR and NMR spectrum, hydroxyl group has been chemically grafted onto the opened epoxy ring of EPO. Polyol-1.5 synthesized from 1 mol of EPO react with 1.5 mol of glycerol was chosen in formulating polyol-silane resin due to its optimum properties and characteristics compared with others. The polyol-1.5 was mixed with different types of silane and hardener to formulate polyol-silane resin. Each silanes was varied with three different weight percentages (10, 30 and 50 wt %). Result shows that only polyol-3-Isocyanatepropyltrimethoxysilane (ICPTES) resin was successfully formed coated film. The ...
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SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES : : PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF : Process of forming a composition containing a nonreactive material (NRM) and a polymer containing more than one 1,2-epoxy group, or a preformed polymer derived from or admixed with a reactant containing more than one 1,2-epoxy group, or with a polymer derived from an epihalohydrin and a polyhydric phenol or polyol; or composition or product thereof : Product contains water per se or water of hydration as designated nonreactive material (DNRM) : Polymer contains more than one 1,2-epoxy group or one derived from reactant containing more than one 1,2-epoxy group is further derived from or reacted with organic nitrogen or sulfur : Organic nitrogen compound contains isocyanate group : Polymer from ethylenic reactants only derived from ...
Malvoisin, E. ; Mercier, Michel ; Roberfroid, Marcel. Enzymatic hydration of butadiene monoxide and its importance in the metabolism of butadiene.. In: Advances in experimental medicine and biology, Vol. 136 Pt A, p. 437-44 (1981 ...
Despite the growing interest in amphiphilic block copolymers for their application in micelles as ideal drug delivery carriers, there remain some challenges related to biocompatibility, stability, degradability, and loading efficiency of the micelles. Herein, we report a novel hydrophobic, pH-responsive epoxide monomer, tetrahydropyranyl glycidyl ether (TGE). Anionic ring-opening polymerization affords the controlled synthesis of a series of its homopolymers (PTGE) and amphiphilic polymers, poly(ethylene glycol)-block-poly(tetrahydropyranyl glycidyl ether) (PEG-b-PTGE). Interestingly, these block copolymers with cyclic TGE moieties showed superior stability in biological media, high loading capacity, tunable release, and controllable degradation compared to the block copolymers with its acyclic analogue, 1-ethoxyethyl glycidyl ether (EEGE), widely employed in polyether, which satisfy all the required design principles and address the challenges in drug delivery systems. The superior ...
158318-67-3 - Fatty acids, C16-18 and C18-unsatd., Me esters, epoxidized - Searchable synonyms, formulas, resource links, and other chemical information.
http://www.decisiondatabases.com/ip/13470-epoxidized-soybean-oil-esbo-industry-market-report. This report analyses major market data like capacity, production, capacity utilization rate, price, revenue, cost, gross, gross margin, supply, import, export, consumption, market share, growth rate and etc. For regional market, this report analyses major regions like Europe, North America, South America, Asia (Excluding China), China and ROW. This report analyses the market forecast from 2017 to 2022 for global and regional market and the new project investment feasibility analysis. This report is a valuable source of guidance for manufacturers, suppliers, distributors, customers, investors and individuals who have interest in this market.. Ask for free sample pages of Global Epoxidized Soybean Oil (ESBO) Industry Report @ ...
Epoxidized Soybean oil is used in numerous applications of the plastics industry due to its plasticizer and stabilizer action on PVC.
INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a) ALLYL GLYCIDYL ETHER NTP Experiment-Test: 05080-02 Report: PEIRPT03 Study Type: CHRONIC Date: 09/10/94 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 20:33:17 Facility: Battelle Northwest Chemical CAS #: 106-92-3 Lock Date: None Cage Range: All Reasons For Removal: All Removal Date Range: All Treatment Groups: Include All a Number of animals examined microscopically at site and number of animals with lesion Page 1 NTP Experiment-Test: 05080-02 INCIDENCE RATES OF NONNEOPLASTIC LESIONS BY ANATOMIC SITE (a) Report: PEIRPT03 Study Type: CHRONIC ALLYL GLYCIDYL ETHER Date: 09/10/94 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 20:33:17 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE CONTROL 5 PPM 10 PPM FEMALE FEMALE FEMALE ...
INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) ALLYL GLYCIDYL ETHER NTP Experiment-Test: 05080-02 Report: PEIRPT05 Study Type: CHRONIC Date: 09/10/94 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 20:33:18 Facility: Battelle Northwest Chemical CAS #: 106-92-3 Lock Date: None Cage Range: All Reasons For Removal: All Removal Date Range: All Treatment Groups: Include All a Number of animals examined microscopically at site and number of animals with lesion Page 1 NTP Experiment-Test: 05080-02 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC ALLYL GLYCIDYL ETHER Date: 09/10/94 Route: RESPIRATORY EXPOSURE WHOLE BODY Time: 20:33:18 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE CONTROL 5 PPM 10 PPM FEMALE FEMALE FEMALE ...
Wash thoroughly after handling. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Use and store under nitrogen. Use only in a chemical fume hood. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Do not breathe vapors ...
IARC 1999 17 "Opinion of the Scientific Panel on Food Additives Flavourings Processing Aids and Materials in Contact with Food (AFC) on a request from the Commission related to 2 2-bis(4-hydroxylphenyl)propane bis(2 3-epoxypropyl)ether (Bisphenol A diglycidyl ether BADGE) " The EFSA Journal No 86 2004 adopted July 13 2004 page 1 18 Draft International Uniform Request A Quotation! ...
Poly(ethylene glycol) diglycidyl ether (n ~22; also known as PEGDE) is a difunctional, water-soluble crosslinker for amine-, hydroxyl-, and carboxyl-functional polymers. Learn More ...
Polymer-coated liposomes, particularly poly(ethylene glycol) (PEG)-substituted liposomes, have emerged as long-circulating carrier systems for drug delivery and diagnostic purposes. A rapid synthesis of three different types of multifunctional lipids with structurally diverse hydrophilic, polyether-based architectures via one- or two-pot approaches is described. Architectural variation is achieved by the combination of different oxyanionic polymerization strategies and various glycidyl ether building units. Branched polyglycerol lipids have been prepared via cholesterol- or 1,2-bis-n-alkyl glyceryl ether-initiated, oxyanionic ring-opening polymerization (ROP) of protected glycidyl ethers and glycidol, respectively. In addition 1:0 these polyglycerol-based lipids, we describe the synthesis of multifunctional PEGs as the hydrophilic part of the lipid, which can be compared to conventional stealth lipids, but bear an adjustable number of hydroxyl functions within the PEG backbone. These lipids can be
ADH-A from Rhodococcus ruber DSM 44541 catalyzes the oxidation of (S)-1-phenylethanol 3000-fold more efficiently as compared with the 2-hydroxylated derivative (R)-phenylethane-1,2-diol. The enzyme is also highly selective for sec-alcohols with comparably low activities with the corresponding primary alcohols. When challenged with a substrate containing two secondary alcohols, such as 1-phenylpropane-(1R,2S)-diol, ADH-A favors the oxidation of the benzylic carbon of this alcohol. The catalytic efficiency, however, is modest in comparison to the activity with (S)-1-phenylethanol. To investigate the structural requirements for improved oxidation of vicinal diols, we conducted iterative saturation mutagenesis combined with activity screening. A first-generation variant, B1 (Y54G, L119Y) displays a 2-fold higher k(cat) value with 1-phenylpropane-(1R,25)-diol and a shift in the cooperative behavior in alcohol binding, from negative in the wild type, to positive in B1, suggesting a shift from a less ...
Harmonised classification and labelling is a legally binding classification and labelling for a substance, agreed at European Community level. Harmonisation is based on the substances physical, toxicological and eco-toxicological hazard assessment. The Hazard classification and labelling section uses the signal word, pictogram(s) and hazard statements of the substance under the harmonised classification and labelling (CLH) as its primary source of information.. If the substance is covered by more than one CLH entry (e.g. disodium tetraborate EC no. 215-540-4, is covered by three harmonisations: 005-011-00-4; 005-011-01-1 and 005-011-02-9), CLH information cannot be displayed in the InfoCard as the difference between the CLH classifications requires manual interpretation or verification. If a substance is classified under multiple CLH entries, a link to the C&L Inventory is provided to allow users to view CLH information associated with the substance and no text is automatically ...
A NIOSH walkthrough industrial hygiene survey was conducted to identify a group of male workers exposed to butyl-glycidyl-ether (2426086). The survey was conducted to determine eligibility for a study of the effects of this chemical on reproductive histories. The work force at the BGE production factory consisted of 330 employees, including 250 production workers. Fifty workers were rotated from o
View Notes - Does it Get Any Better than This from CH 223 at N.C. State. a. OH b. The aldehyde and epoxide are the only carbon sources that can show up in the product. Otherwise, you can also use
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The challenges that this market is expected to face in the years ahead are the health hazards that are likely to occur in the industry of food and beverages to the excess use of ESBO and low product competitiveness that it creates.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice ...
Like most things in Scouting, the BSA numbering system came about to fill a need. The need was to be able to chart a Scouts progress without having to write out the full names of merit badges in very small spaces. The first fourteen merit badges, numerically speaking, were the Eagle required merit badges at the time the numbering system originated. The Safety and Sports merit badges are no longer Eagle required while Family Life, Cycling, and Hiking have been added. The remainder of the badges are basically in alphabetical order with newer badges added at the end. This list also includes discontinued merit badges which were part of the numbering system. These merit badges are provided for reference purposes only. Current merit badges are linked to their requirements pages, discontinued merit badges are not linked. ...
We report that star-shaped molecules with cholic acid cores asymmetrically grafted by low molecular weight polymers with hydrogen bonding end-groups undergo aggregation to nanofibers, which subsequently wrap into micrometer spherical aggregates with low density cores. Therein the facially amphiphilic cholic acid (CA) is functionalized by four flexible allyl glycidyl ether (AGE) side chains, which are terminated with hydrogen bonding 2-ureido-4[1H]pyrimidinone (UPy) end-groups as connected by hexyl spacers, denoted as CA(AGE6-C6H12-UPy)4. This wedge-shaped molecule is expected to allow the formation of a rich variety of solvent-dependent structures due to the complex interplay of interactions, enabled by its polar/nonpolar surface-active structure, the hydrophobicity of the CA in aqueous medium, and the possibility to control hydrogen bonding between UPy molecules by solvent selection. In DMSO, the surfactant-like CA(AGE6-C6H12-UPy)4 self-assembles into nanometer scale micelles, as expected due ...
Synthetic utilities of vicinal diols are well known and their preparations from reduction of a-diketones and acyloins have attracted a great deal of attention. In this context, we decided to examine solid state reduction of a-diketones and acyloins with NaBH4 in the presence of wet SiO2. Reduction of a-diketones to their vicinal diols took place by 1.5 molar equivalents of NaBH4 in the presence of wet SiO2 (30% m/m) under solvent free condition at 75-80 ºC. The product diols were obtained in excellent yields and all attempts to reduce a-diketones into acyloins were unsatisfactory by this reducing system (Table 7). Reduction of acyloins to vicinal diols was also achieved successfully by NaBH4/wet SiO2 (30% m/m) in solid state. Using one molar equivalent of NaBH4 at 75-80 ºC was the requirement for the excellent yields of the corresponding products (Table 7). No assumptions on the simple diastereoselectivity (syn or anti) of the products were made.. The influence of water in wet SiO2 for the ...
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The requirements for each merit badge appear in the current BSA merit badge pamphlet for that award and in the current edition of the Boy Scout Requirements book, available at Scout shops and council service centers. When a Scout has decided on a merit badge he would like to earn, he obtains from his Scoutmaster the name and phone number of the district/council-approved merit badge counselor. At this time, the Scoutmaster also can issue the Scout a signed Application for Merit Badge (blue card). The Scout contacts the merit badge counselor to make an appointment, and together they schedule a date and time for the Scout and his buddy to meet. The counselor suggests that the Scout bring the merit badge pamphlet, the Application for Merit Badge, and any work that he has started or accomplished, and that he prepare by reading over the requirements. At their first meeting, the merit badge counselor and the Scout decide upon a tentative schedule for completing the requirements. They should keep the ...
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Find quality suppliers and manufacturers of 88431-47-4(2-Oxiranecarboxylicacid, 2-[5-(4-chlorophenyl)pentyl]-) for price inquiry. where to buy 88431-47-4(2-Oxiranecarboxylicacid, 2-[5-(4-chlorophenyl)pentyl]-).Also offer free database of 88431-47-4(2-Oxiranecarboxylicacid, 2-[5-(4-chlorophenyl)pentyl]-) including MSDS sheet(poisoning, toxicity, hazards and safety),chemical properties,Formula, density and structure, solution etc.
1464-53-5 - ZFIVKAOQEXOYFY-UHFFFAOYSA-N - 1,2:3,4-Diepoxybutane - Similar structures search, synonyms, formulas, resource links, and other chemical information.
Amine Reactive PEG Derivatives and PEGylation Reagents: PEG NHS ester - N-hydroxyl succinimidyl ester (SCM, glutarate, succinate, glutaramide) PEG aldehyde - PEG propionaldehyde PEG carboxylic acid - carboxyl methyl, acetic acid, glutaric and succinic acid PEG cyanur, bromide, and chloride PEG mesylate and tosylate PEG NPC - nitrophenyl carbonate PEG epoxide - PEG glycidyl ether
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Based on what weve previously said about axial and equatorial substituents, and that equatorial substituents are favoured (all other things being equal) you might think that this epoxide opening is being driven by the formation of equatorial substituents. Thats sensible and logical. In fact if you look at the product from the above reaction, the two new substituents are both axial. Theres something going on here that were overlooking. Lets draw out the two immediately-formed products from attack at the two positions. To do that we draw the cyclic epoxide - its rather like drawing a cyclohexene from lecture 6, but the epoxide is on one face of the ring or the other. The incoming chloride has to come in from the bottom face (opposite the epoxide oxygen). As it does so the carbon to which it is attaching itself effectively moves down to meet it, so as to give a tetrahedral centre. ...
In this study, phenol-formaldehyde (PhF) resins, bisphenol A diglycidyl ether and 4-vinylpyridine were used for the preparation of two organic aerogels (AGs). The data showed that the organic AGs exhibited porous and functionalized structures resulting in efficient Cu(ii) and Mn(ii) ion removal from water sources.
During the year from 1st April 2015 to 31st March 2016, how many applicants for Blue Badges listed Chronic Dilated Cardiomyopathy amongst their reasons for requiring a Blue Badge?. Unfortunately it is not possible to answer this question without looking at each application to identify those which mention Chronic Dilated Cardiomyopathy - including the 16669 which were processed and the 784 which were not. The condition is one of many which be mentioned as free text in a form of four or five pages. We have estimated that it would take approximately five minutes to identify, find, open and read each application so as the total time necessary would be way in excess of the 18 hour limit specified by Section 12 of the Freedom of Information Act the information requested is exempt.. Of the applicants listing Chronic Dilated Cardiomyopathy amongst their reasons for requiring a Blue Badge, how many were issued or reissued with a Blue badge without being required to undergo an assessment, and how many ...
1-[5-(4-Phenylpiperazin-1-yl)pentyl]benzo[cd]indol-2-one | C26H29N3O | CID 9843889 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Youre never too old to give or receive a merit badge from Disorderly Goods. Have a think about if any of your friends or family (or even yourself) might deserve a little bit of recognition for any outstanding behavior and then choose the appropriate badge for commemoration. Or, go all-out and get the 16 pack for $92.50 ...