Monosodium salt

MSMA [2163-80-6] monosodium salt of methylarsonic acid CH3ASO3 -Na... 

Tolbutamide Sodium USP. Orinase Diagnostic [473-41-6] (A/-[(butylamine)carbonyl]-4-methylben2enesulfonamide, monosodium salt), mol wt 292.33, is a white to off-white practically ododess crystalline powder having a slightly bitter taste. It is freely soluble in water, soluble in alcohol and chloroform, and very slightly soluble in ether and can be prepared by dissolving tolbutamide in aqueous NaOH. 

The reaction of NaOH with bisphenol A generates water. This water must be thoroughly removed from the system to allow the reaction to be driven to completion, and more importandy, to preclude any residual water in the system from hydrolyzing part of the DCDPS monomer (2). Before the introduction of DCDPS for the polymerization step, all but traces of water must be removed. Failure to do so results in regeneration of NaOH, which rapidly reacts with DCDPS to form the monosodium salt of 4-chloro-4 -hydroxydiphenylsulfone [18995-09-0] (3) (6). 

An estimation of the amount of amino acid production and the production methods are shown ia Table 11. About 340,000 t/yr of L-glutamic acid, principally as its monosodium salt, are manufactured ia the world, about 85% ia the Asian area. The demand for DL-methionine and L-lysiae as feed supplements varies considerably depending on such factors as the soybean harvest ia the United States and the anchovy catch ia Pern. Because of the actions of D-amiao acid oxidase and i.-amino acid transamiaase ia the animal body (156), the D-form of methionine is as equally nutritive as the L-form, so that DL-methionine which is iaexpensively produced by chemical synthesis is primarily used as a feed supplement. In the United States the methionine hydroxy analogue is partially used ia place of methionine. The consumption of L-lysiae has iacreased ia recent years. The world consumption tripled from 35,000 t ia 1982 to 100,000 t ia 1987 (214). Current world consumption of L-tryptophan and i.-threonine are several tens to hundreds of tons. The demand for L-phenylalanine as the raw material for the synthesis of aspartame has been increasing markedly. 

Flavin mononucleotide was first isolated from the yellow en2yme in yeast by Warburg and Christian in 1932 (4). The yellow en2yme was spHt into the protein and the yellow prosthetic group (coen2yme) by dialysis under acidic conditions. Flavin mononucleotide was isolated as its crystalline calcium salt and shown to be riboflavin-5Lphosphate its stmeture was confirmed by chemical synthesis by Kuhn and Rudy (94). It is commercially available as the monosodium salt dihydrate [6184-17 /, with a water solubiUty of more than 200 times that of riboflavin. It has wide appHcation in multivitamin and B-complex solutions, where it does not require the solubili2ers needed for riboflavin. 

Vitamin has been synthesized from the condensation of the monosodium salt of menadiol with phytyl biomide (24). 

M 367.3, Cl 15670, Xma 501nm, pK 7.22 (OH), pK 13.39 (OH). Converted to the monosodium salt by pptn with NaOAc/AcOH buffer of pH 4, then purified by pptn of the free acid from aq soln with cone HCl, washing and extracting with EtOH in a Soxhlet extractor. The acid ppted on evaporating the EtOH and was reconverted to the sodium salt.as described for Chlorazole Sky Blue FF. Dried at 110°. It is hygroscopic. [Coates and Rigg Trans Faraday Soc 57 1088 7967.]... 

Crystd from water. Alternatively, it was converted to the monosodium salt which was crystd from water and washed with a little water, EtOH and then diethyl ether. The free acid was recovered by acidification. 

Hydroxynaphthol Blue tri-Na salt [63451-35-4] M 620.5, m dec on heating, pKE,t <0. Crude material was treated with hot EtOH to remove soluble impurities, then dissolved in 20% aqueous MeOH and chromatographed on a cellulose powder column with propanol EtOH water (5 5 4) as eluent. The upper of three zones was eluted to give the pure dye which was ppted as the monosodium salt trihydrate by adding cone HCl to the concentrated eluate [Ito and Ueno zfna/ysr 95 583 1970. ... 

Naphthyl phosphate disodium salt [2183-17-7] M 268.1, pK 0.97, pK 5.85 (for free acid). The free acid has m 157-158° (from Me2CO/ C6H6). The free acid is crystd several times by adding 20 parts of boiling CgHg to a hot solution of 1 part of free acid and 1.2 parts of Mc2CO. It has m 157-158°. [J Am Chem Soc 77 4002 1 955.] The monosodium salt was ppted from a soln of the acid phosphate in MeOH by addition of an equivalent of MeONa in MeOH. [J Am Chem Soc 72 624 1950.] See entry on p.550 in Chapter 6. 

Pyridyl)-5,6-diphenyl-l,2,4-triazine-p,p -disulfonic acid, monosodium salt (H2O)... 

Sodium phosphoamidate [3076-34-4] M 119.0. Dissolved in water below 10°, and acetic acid added dropwise to pH 4.0 so that the monosodium salt was ppted. The ppte was washed with water and Et20, then air dried. Addition of one equivalent of NaOH to the solution gave the sodium salt, the solution being adjusted to pH 6.0 before use [Rose and Heald Biochem J 81 339 1961]. 

A solution of the monosodium salt of diacetylene in 300 ml of liquid ammonia is prepared from 13.8 g (0.6 g-atoms) sodium and 24.6 g (0.2 moles) l,4-dichlorobut-2-yne. To this mixture is added a suspension of 5 g (17.6 mmoles) 3-methoxyestra-l,3,5(10)-trien-17-one in anhydrous tetrahydrofuran at —40° and the reaction mixture is stirred and maintained at this temperature for 2 hr. Ammonium chloride is then added and the ammonia is allowed to evaporate overnight. The residual solids are extracted with methylene dichloride and the extracts washed with water, dried over magnesium sulfate, and evaporated at 70°. The resultant dark gum is... 

Chemical Name N-(2-carboxy-3,3-dimethvl-7-oxo-4-thia-1-azabicyclo[3.2.0I hept-6-yl)-2-phenylmalonamic acid, 1-(5-indanyl ester), monosodium salt... 

Chemical Name 7-(2-cyanoacetamido)-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo[4,2.0] -oct-2-ene-2-carboxylic acid acetate monosodium salt... 

Chemical Name 2-[(2,6-dichlorophenyi)amino] benzeneacetic acid monosodium salt... 

The reaction flask was washed with a solution of 25 grams of sodium hydroxide in 250 cc of water. The combined alkaline solutions were heated to boiling for 5 minutes. A small amount (6 grams) of alkali-insoluble material remained and was filtered off. Sulfuric acid (62% H2SO4 content) was then added at room temperature dropwise under stirring to the filtrate until a pH of 10.3 was reached. This required about BO grams of the acid. The monosodium salt of bis-(3,5,6-trichloro-2-hvdroxyphenyl) methane precipitated out of solution and was filtered and then washed with 200 cc of water. The salt was then sus-... 

Chemical Name Dihydro-5-(1 methvlbutvl)-5-(2-(methvlthio)ethyl] -2-thioxo-4,6(1 H,5H)-pyrimidinedione monosodium salt... 

Chemical Name 5-Ethyl-5-(1-methylbutyl)-2,4,6-(1 H,3H,5H)-pyrimidinetrione monosodium salt... 

Chemical Name 5-Phenyl-5-(2-thienvl)-2,4-imidazolidinedione monosodium salt Common Name -... 

Chemical Name 2,2,2-trichloroethanol dihydrogen phosphate monosodium salt Common Name Trichloroethyl phosphate monosodium salt Structural Formula ... 

The product is relatively sensitive to basic conditions, showing both polymerization and addition of water. Therefore alkaline conditions must be avoided. Neutralization serves to convert monophenylphosphinic acid (formed by hydrolysis of unreacted, unextracted dichlorophenylphosphine) to the monosodium salt, thereby preventing its subsequent extraction from water along with the phosphine oxide. 

Sodium glutamate MSG 1-glutamic acid monosodium salt hydrolyzed vegetable protein utolyzed yeast whey protein... 

See also whey protein monosodium salt. See monosodium glutamate... 

Butanedioic acid, 2,3-dihydroxy-(2R,3R)-, monopotassium monosodium salt (304-59-6)... 

In the literature a number of different techniques for the preparation of a-sulfo fatty acid esters can be found. There is equipment for small-scale and commercial scale sulfonation. Stirton et al. added liquid sulfur trioxide dropwise to the fatty acids dispersed or dissolved in chloroform, carbon tetrachloride, or tetrachoroethylene [44]. The molar ratio of S03/fatty acid was 1.5-1.7 and the reaction temperature was increased to 65 °C in the Final stage of sulfonation. The yield was 75-85% of the dark colored a-sulfonated acid. The esterification of the acid was carried out with either the a-sulfonic acid alone, in which case the free sulfonic acid served as its own catalyst, or with the monosodium salt and a mineral catalyst. 

Citric acid, which is extracted from citrus fruits and pineapples, undergoes three successive deprotonations with pK, values of 3.14, 5.95, and 6.39. Estimate the pH of (a) a 0.15 m aqueous solution of the monosodium salt (b) a 0.075 M aqueous solution of the disodium salt. 

Tough, transparent, heat and flame resistant, multiblock (bisphenol fluorenone carbonate) (BPF)-dimethylsiloxane copolymers have been synthesized by interfacial polycondensation of phosgene with various mixtures of BPF end-capped siloxane oligomers and free BPF or its monosodium salt 232). Siloxane content of the copolymers were varied between 7 and 27%. Presence of two Tg s, one below —100 °C and the other as high as 275 °C, showed the formation of two-phase morphologies. 

CN (4-Amino-1-hydroxybutylidene)bis[phosphonic acid] monosodium salt trihydrate acid... 

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