Monomethyl phthalate

Dichlorobiphenvl. PCB-1016, PCB-1232, PCB-1242, PCB-1248, PCB-1254, PCB-1260 Monoisopropyl carbonate, see Chlornronham. Pronham Monomethyl phosphate, see Malathion Monomethyl phthalate, see Dimethyl phthalate Monomethyl p3uazole, see Difenzoguat methyl sulfate Monomethyl tetrachloroterephthalate, see Chlorthal-dimethvl... 

Studies on health effects of PAEs in humans have remained controversial due to limitations of the study design. Some findings in human populations are consistent with animal data, suggesting that PAEs and their metabolites produce toxic effects in the reproductive system. Some studies associate monoesters PAEs with semen parameters, sperm DNA damage, and hormones in human population, but none of them are statistically significant. Urinary monomethyl phthalate (MMP), monobenzyl phthalate (MBzP), mono- -butyl phthalate (MBP), MEHP, and monoethyl phthalate (MEP) were associated with poor sperm morphology and vigor, and with low sperm concentration, motility, and linearity [31-35]. However, it is not yet possible to conclude whether phthalate exposure is harmful for human reproduction. 

If, in this example, the best recovery were observed for the monomethyl phthalate and the least recovery observed for the mono-n-octyl phthalate (i.e., the order in recovery at pH 2 were reversed), an inadequate volume or eluotropic strength of the elution solvent might be the cause of reduced recovery for the more hydrophobic analytes. 

Recovery using methylene chloride or diethyl ether as eluting solvents was 86% or more for the monoesters depicted in Figure 2.40, except for the monomethyl phthalate. Relative to benzene, the polar character of methylene chloride and diethyl ether improves the wetability of the apolar sorbent having polar water molecules sorbed to the surface. The reduced recovery of mono-methyl-phthalate using methylene chloride or diethyl ether is probably due to incomplete sorption (i.e., the breakthrough volume may have been exceeded) rather than to incomplete desorption, because the more hydrophobic components were more completely desorbed. 

Benz[6]indeno[2,l-e]pyrandiones are readily available by the acylation of o-hydroxy-acetophenone with monomethyl phthalate and subsequent Baker-Venkataraman rearrangement <02TL4515>. 

Monomethyl phthalate, BOP, ZnCB, DIPEA, CH3CN, sonication, 16 h, 53-95 % yield. These conditions result in racemization free protection of amino acid amides and esters. PyBOP can also be used as a dehydrating agent. ... 

Holba, V., Benko, J., Okalova, K. Effect of ionic strength and dielectric constant on base hydrolysis of monomethyl phthalate. Collect. Czech. Chem. Commun. 1978, 45(6), 1581-1587. 

Fig. 132.— l/Trr, — l/Tli)/vi plotted against Vi/Tm for mixtures of cellulose tributyrate with hydroquinone monomethyl ether ( ), dimethyl phthalate (O), and ethyl laurate (A). (Mandelkern and Flory. s)... 

Hydroquin one monomethyl ether Dimethyl phthalate Ethyl benzoate Ethyl laurate... 

Suzuki et al. [Ill] screened three solvents—methylene chloride, diethyl ether, and benzene—to determine their ability to produce optimum elution of phthalic acid monoesters sorbed on a styrene divinylbenzene polymer (Figure 2.40). The effect of elution solvent strength on the recovery of the free acid form of the monomethyl (MMP), ethyl (MEP), -propyl (MPRP), K-butyl (MBP), K-pentyl (MPEP), and -octyl (MOP) phthalates is compared. The phthalic acid monoesters are arranged in Figure 2.40 in the order of increasing number of carbons in the alkyl chain, which in turn is roughly correlated with an increase in hydrophobicity. 

Poly(ethylene-co-aciylic acid)-g-poly(ethylene glycol) monomethyl ether dioctyl phthalate 2005ZHO... 

Synonyms Ethyl 0-(o-(methoxycarbonyl) benzoyl) glycolate Ethyl o-(methoxycarbonyl) benzoyloxyacetate Glycolic acid, ethyl ester, methyl phthalate Phthalic acid, monomethyl ester, ester with ethyl glycolate Empirical C13H14O6... 

Monomethyl maleic ester of epoxidised soybean oil (MESO) is prepared by the reaction of epoxidised oil with monomethyl maleate with AMC-2 catalyst. (AMC-2 is a mixture of 50% trivalent organic chromium complexes and 50% phthalate esters). This MESO is photo-polymerised with ultraviolet light and free radically homopolymerised and copolymerised with styrene, vinyl acetate and methylmethacrylate. MESO may also be reacted with maleic anhydride at the newly formed hydroxyl groups to give maleinised MESO. Thus a large number of resinous systems may be made from the epoxidised oil. 

Diethoxyoxanilide, 194 Diethylene glycol, 81 Diethylene glycol dibenzoate, 9 Di(ethylene glycol) methyl ether, 205 Diethylene glycol monomethyl ether, 206 Diethyl ether, 198, 216, 218 Di-2-ethylhexyl-l,2-cyclohexane diacid ester, 13 Di(2-ethylhexyl)phthalate, 239... 

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