Maleic acid Methylal

Magnesium methyl carbonate [Magnesium, methoxyOnethyl cjibonato-O-], 121 Maleic acid, methyl ester [2 Butenedioic acid, (Z)-, dimethyl ester], 63 Maganese, tricarbonyl [ (1,2,3,4,5-rj)-l -... 

MACROCYCLIC POLY AMINES, 58, 86, 90 MACROLIDES, 58, 98 Magnesium, bromo phenyl, 58, 138 Magnesium methyl carbonate, 56, 121 Maleic acid, methyl ester, 56, 63 Manganese, tricarbonyl[(l,2,3,4,5-7))-l-carboxy-2,4-cyclopentadien 1 yl], ... 

Polychlorohydroxypropylmethacrylate containing maleic acid methyl ester SEL-N 0.026 27... 

Complex formation in aqueous solution between the maleic acid-methyl vinyl ether copolymer (Gantrez S) and polyethylenimine have been studied by turbidity and conductance measurements.The composition of the complex depended on the pH of the medium. At pH 4.7, the complexation proceeded in 1 1 stoichiometry for polyethylenimine of molecular weight... 

Polyelectrolyte Alternate copolymer maleic acid-methyl vinyl ether Polyacrylic acid Polyethylene-sulfonic acid Polyphosphate ... 

Krilium The trade name of a soil conditioner. The solid form of Krilium has as active in-gredienl a copolymer of about equal molar proportions of vinyl ethanoate and the partial methyl ester of maleic acid. It may be formulated with lime, bentonite, etc. In aqueous form, Krilium contains a copolymer of about equal molar proportions of isobutene and ammonium maleamate. Other polymers are also used. 

P4ALEIC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) 9a,21-dichloro-17-[(2-furanyl-carbonyl)oxyl]-llb-hydroxy-16a-methyl-pregna-l,4-diene-3,20-dione. See Mometasone fluroate. 

The methylated maleic acid adduct of phthalic anhydride, known as methyl nadic anhydride VI, is somewhat more useful. Heat distortion temperatures as high as 202°C have been quoted whilst cured systems, with bis-phenol epoxides, have very good heat stability as measured by weight loss over a period of time at elevated temperatures. The other advantage of this hardener is that it is a liquid easily incorporated into the resin. About 80 phr are used but curing cycles are rather long. A typical schedule is 16 hours at 120°C and 1 hour at 180°C. 

Preparation of 4-aza-S-(N-methyi-4-piperidyiidene)-10,11-dihydro-SH-dibenzo[a,d]cyciohep-tene dimaieate To a solution containing 4.3 g of 4-aza-(N-methyl-4-piperldylidene)-10,11-dihydro-5H-dibenzo[a,d] cycioheptene in 55 ml of ethyl acetate, add a solution of 3.45 g of maleic acid dissolved in ethyl acetate. Filter the resulting precipitate and recrystallize the desired product from an ethyl acetate-methanol mixture to yield 4-aza-5-(N-methyl-4-pi-perldylidene)-10,11 -dihydro-5H-dibenzo[a/d] cycloheptene dimaieate, MP 152°-154°C. 

Acetanilide and maleic acid are condensed to give /3-(p-acetaminoben2oyl)acrvlic acid which is hydrogenated to give methyl- y-(p-aminophenyl)butyrate. That is reacted with ethylene oxide and then with phosphorus oxychloride to give the methyl ester which is finally hy-droly2ed to give chlorambucil. 

Potassium Ammonia Methyl iodide Maleic acid... 

A warm solution of 6.5 g (0.02 mol) of 6-chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazo-[13-a] [1,4] -benzodiazepine in 30 ml of ethenol wes combined with a warm solution of 2.6 g (0.022 mol) of maleic acid in 20 ml of ethenol. The mixture was diluted with 150 ml of ether and heated on the steam bath for 3 minutes. After cooling, the crystals were collected, washed with ether and dried in vacuo to yield 8-chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazoM, 5-a] [1,4] -benzodiazepine maleete, melting point 148°C to 151°C. 

A solution of N-(2-aminobenzvl)-1-phenyl-2-metKylaminoethanol-1 was prepared by the reaction of a-bromo-acetophenone and (2-nitrobenzyl)methylamine, followed by hydrogenation of the nitro group by means of nickei on diatomaceous earth at room temperature and reduction of the CO group by means of sodium borohydride. The intermediate thus produced was dissolved in 100 ml of methylene chloride and introduced dropwise into 125 ml of sulfuric acid at 10° to 15°C. After a short standing, the reaction mixture was poured onto ice and rendered alkaline by means of a sodium hydroxide solution. Dy extraction with ether, there was obtained 1,2,3,4-tetrahydro-2-methyl-4-phenyl-8-amino-iso-quinoline. The base is reacted with maleic acid to give the maleate melting point of the maleate 199° to 201°C (from ethanol). 

Chloro-lO-13-(di-N-2-chloroethvl)aminopropvl)lphenthiazine hydrochloride (1.8 g) is heated in a sealed tube for 4 hours at 140°C with a 290 g/l aqueous solution (9 cc) of monomethylpiperazine. The contents of the tube are treated with chloroform (40 cc). The aqueous layer is decanted and the chloroform layer is shaken with N hydrochloric acid (15 cc followed by 2 cc). The aqueous solution is treated with sodium hydroxide (d = 1.33, 10 cc) and chloroform (20 cc). After evaporation of the solvent, the base (1.5 g) is obtained. A solution of maleic acid (1 g) in ethanol (5 cc) is added and after recrystallization from water, 3-chloro-10-13-(4 -methyl-1 -piperazinvDpropyll phenothiazine dimaleate is obtained, melting point 228°C (inst.). 

CN, coordination number. A CN of 5-6 means that the compound contains the Sn central atom in two different environments. 1, Bu2Sn0CH2CH20 2, methyl-4,6-0-benzylidene-a-D-glucopyranoside 3, methyl-4,6-0-benzylidene-a-D-mannopyranoside 4, o-lactobionic acid 5, o-galactose 6, Bu2Sn-DNA, maleic acid. 

The strength of ion binding is enhanced when the arrangements of the functional groups permit chelate formation (Begala Strauss, 1972). Thus, magnesium is more firmly bound to poly(vinyl methyl ether-maleic acid) than to either poly(acrylic acid) or poly(ethylene maleic add). 

US patent 6,806,280, Polymorph of 5-[4-[2-( -methyl- (2-pyridyl)amino)ethoxy] benzyl]-thiazolidine-2,4-dione, maleic acid salt [117]. This invention discloses a polymorphic form of 5-[4-[2-(A-methyl-jV-(2-pyridyl)amino)cthoxy]benzyl]-thia-zolidine-2,4-dione, maleic acid salt. The polymorphic form is characterized by (i) an infrared spectrum containing peaks at 1763, 912, 856, and 709 cm-1 and/or... 

Experimental studies of the adsorption of polyelectrolyte have been reported by several authors Pefferkom, Dejardin, and Varoqui (3) measured the hydrodynamic thickness of an alternating copolymer of maleic acid and ethyl vinyl ether adsorbed on the pore walls in cellulose ester filter as a function of the molecular weight and the concentration of NaCl. Robb et al. (4) studied the adsorption of carboxy methyl cellulose and poly (acrylic acid) onto surfaces of insoluble inorganic salts. However, their studies are limited to the measurements of adsorbance and the fraction of adsorbed segments. 

Crosslinking of amine- or hydroxy-terminated PAMAM dendrimers using cyclic anhydride - amine or cyclic anhydride - hydroxy addition reactions was employed for preparation of crosslinked thin films of very low permeability [73], Polyanhydrides, such as maleic anhydride-methyl vinyl ether copolymers, were used as crosslinking components. In the case of amine-terminated PAMAM, crosslinking and chemical stability were further increased by imidization of the maleamic acid groups retro-Michael eliminations were followed by Michael additions to further crosslink the film. 

Fig. 1 Chemical structures of the polymers commonly used for preparation of beads poly (styrene-co-maleic acid) (=PS-MA) poly(methyl methacrylate-co-methacrylic acid) (=PMMA-MA) poly(acrylonitrile-co-acrylic acid) (=PAN-AA) polyvinylchloride (=PVC) polysulfone (=PSulf) ethylcellulose (=EC) cellulose acetate (=CAc) polyacrylamide (=PAAm) poly(sty-rene-Wocfc-vinylpyrrolidone) (=PS-PVP) and Organically modified silica (=Ormosil). PS-MA is commercially available as an anhydride and negative charges on the bead surface are generated during preparation of the beads...

The variety of educts and products of the higher MCRs is illustrated here. Product 72 (Scheme 1.18) is formed from the five functional groups of lysine, benzaldehyde, and tert-butylisocyanide. The synthesis of 73 is achieved with hydrazine, furanaldehyde, malonic acid, and the isocyano methylester of acetic acid, compound 74 results from the reaction of benzylamine, 5-methyl-2-furanaldehyde, maleic acid mono-ethylester, and benzylisocyanide. ° Zhu et al. prepared a variety of related products, such as, 75, from (9-amino-methyl cinnamate, heptanal, and a-isocyano a-benzyl acetamides. 

Similarly, ab initio calculations on the thermal reaction of propene forming methyl-cyclopentane suggested a three-step biradical reaction with 1,4-biradical and 1,5-biradical as intermediates. Quantum-chemical calculations have been carried out for the cyclization of the neocarzinostatin chromophore cyclonona-l,2,3,5-tetraen-7-yne to 1,5-didehydroindene biradical. The degree of stereoselectivity of the Diels-Alder reaction of 2-methylfuran and maleic acid in water has been found to reduce significantly in the presence of heavy atoms. Taking into account the relatively low concentration (3.5-7 m) of heavy-atoms, and the rapid fall off of the heavy-atom effect with distance, these results show that a large portion of the Diels-Alder reaction occurs via diradical intermediates. " ... 

Formaldehyde Formic acid Isobutyl alcohol Maleic anahydride Methyl alcohol (methanol)... 

Triclosan is retained in dental plaque for at least 8 hours, which in addition to its broad antibacterial property could make it suitable for use as an antiplaque agent in oral care preparations. However, the compound is rapidly released from oral tissues, resulting in relatively poor antiplaque properties as assessed in clinical studies of plaque formation. This observation is further corroborated by a poor correlation between minimal inhibitory concentration values generated in vitro and clinical plaque inhibitory properties of triclosan. Improvement of substantivity was accomplished by incorporation of triclosan in a polyvinyl methyl ether maleic acid copolymer (PVM/MA, Gantrez). With the combination of PVM/MA copolymer and triclosan, the substantivity of the triclosan was increased to 12 hours in the oral cavity. 

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