Benzoic 2-hydroxy-4-methyl

Figure 12.12 THM GC/MS curves of a Winsor Newton lemon alkyd paint (a) and of an alkyd sample taken from Fontana s work Concetto spaziale (1961) (b). Peak assignments 1, 1,3 dimethoxy 2 propanol 2, 1,2,3 trimethoxy propane 3, 3 methoxy 1,2 propandiol 4, 4 chloro benzenamine 5, 3 methoxy 2,2 bis(methoxymethyl) 1 propanol 6, 3 chloro N methyl benzenamine 7, 3 methoxy 2 methoxymethyl 1 propanol 8, 4 chloro N methyl benzenamine 9, phthalic anhydride 10, 3 chloro 4 methoxy benzenamine 11, suberic acid dimethyl ester 12, dimethyl phthalate 13, azelaic acid dimethyl ester 14, sebacic acid dimethyl ester 15, palmitic acid methyl ester 16, oleic acid methyl ester 17, stearic acid methyl ester 18, 12 hydroxy stearic acid methyl ester 19, 12 methoxy stearic acid methyl ester 20, styrene 21, 2 (2 methoxyethoxy) ethanol 22, 1,1 oxybis(2 methoxy ethane) 23, benzoic acid methyl ester 24, adipic acid dimethyl ester 25, hexadecenoic acid methyl ester 26, dihydroisopimaric acid methyl ester 27, dehydroabietic acid methyl ester 28, 4 epidehydroabietol...

The chemical structures of the majority of FMs that have been studied in wastewater treatment are given in Figs. 1-3. Figure 1 shows a variety of FM structures that include alcohols, aldehydes, and ketones, including benzyl acetate (phenylmethyl ester acetic acid), methyl salicylate (2-hydroxy-methyl ester benzoic acid), methyl dihydrojasmonate (3-oxo-2-pentyl-methyl ester cyclopentaneacetic acid), terpineol (4-trimethyl-3-cyclohexene-1-methanol), benzyl salicylate (2-hydroxy-phenylmethyl ester benzoic acid), isobornyl acetate... 

The opposite can be observed with acidic analytes as shown in Figure 2.18. Here, with classical RP and methanol at pH 3 the best selectivity and peak shapes were observed. On the other hand, with the shielded phases, acetonitrile gives the best separation. As already discussed, with shield phases the retention of nonpolar components (here peak 6 dimethyl phthalate) is reduced, whereas that of phenolic components (e.g., peak 5 p-hydroxy benzoic acid methyl ester) is increased. 

Benzoic acid, 4-hydroxy methyl ester pFS033... 

Methyl 4-hydroxy benzoate 4-hydroxy benzoic acid, methyl ester methyl p-hydroxybenzoate... 

The 5-chloro-2-(2-methyl-2-propenyloxy)benzoic acid, methyl ester was heated at reflux for 6 h in l-methyl-2-pyrrolidinone. The mixture was then vacuum distilled and the fraction collected and the desired 2-hydroxy-5-chloro-3-(2-methyl-2-propenyl)benzoic acid, methyl ester was obtained. 

It will be recalled that in the case of succinyl chloride both of these forms are obtained, but mostly the symmetrical (p. 282). Now from phthalic anhydride only one phthalyl chloride is obtained. This chloride acts like the unsymmetrical succinyl chloride, not like the symmetrical. The positive proof, however, that phthalyl chloride is the unsymmetrical compound is the following Sodium amalgam reduces phthalyl chloride by replacement of the chlorine with hydrogen. The compound formed is known as phthalide. This phthalide takes up water as anhydrides do and the product is hydroxy-methyl benzoic acid. 

Hydroxy-methyl Benzoic Acid.—The first example given above is important in connection with the constitution of phthalide (p. 693) and phthalyl chloride (p. 692). By the addition of water phthalide is converted into o-hydroxy-methyl benzoic acid. 

Hydroxy-3,5-dimethoxy-benzeneacetic acid, methyl ester (methyl homosyringate) 4-Hydroxy-3,5-dimethoxy-benzoic acid (syringic acid) 4-Hydroxy-3,5-dimethoxy-benzoic acid ethyl ester (ethyl syringate) 4-Hydroxy-3,5-dimethoxy-benzoic acid methyl ester (methyl syringate) 4-Hydroxy-3,5-dimethoxybenzaldehyde (syringaldehyde) 4-Hydroxy-3-methoxy-benzeneacetic acid methyl ester (methyl homovanillate) 4-Hydroxy-3-methoxy-benzoic acid (vanillic acid)... 

Hydroxy-3-methoxy-benzoic acid ethyl ester (ethyl vanillate) 4-Hydroxy-3-methoxy-benzoic acid ethyl ether (vanillyl ethyl ether) 4-Hydroxy-3-methoxy-benzoic acid methyl ester (methyl vanillate) 4-Hydroxy-3-methoxy-benzoic acid methyl ether (vanillyl methyl ether) 4-Methyl-2-(2 -methyl-l-propenyl)-phenol 4-Methyl-2,6-dimethoxyphenol (methylsyringol)... 

H.77) (H.77) Benzoic acid, 2-hydroxy-, methyl ester, methyl 2-hydroxybenzoate, methyl salicylate, salicylic acid methyl ester [119-36-8] FEMA 2745... 

The aliphatic-aromatic diacid monomers were prepared from the reaction of bromoalkanoic acid methyl ester and p-hydroxy benzoic acid methyl ester. The polymers of carboxyphenoxy alkanoic add of n = 3, 5, and 7 methylenes were soluble in chlorinated hydrocarbons and melted at temperatures below 100 °C. Copolymers of these monomers melted at lower temperatures than the respective homopolymers. These polymers displayed zero-order hydrolytic degradation profile ranging from 2 to 10 weeks. Increasing the length of the alkanoic chain, decreased the degradation rate of the polymer (Fig. 3). 

Benzoic acid, 4-hydroxy-, methyl ester, sodium salt 174b, 3266 ... 

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