Octanoic acid dimethyl

Figure 11.1 Py/methylation GC/MS chromatograms of lead white pigmented linseed oil paint after 610 °C Curie point pyrolysis assisted with on line methylation using 2.5% methanolic TMAH (the sample and TMAH solution was applied onto a rotating Curie point wire pyrolysis time 6 s, interface 180°C). 1, heptenoic acid, methyl ester 2, heptanoic acid, methyl ester 3, butenedioic acid, dimethyl ester 4, butanedioic acid, dimethyl ester 5, octenoic acid, methyl ester 6, octanoic acid, methyl ester 7, pentenedioic acid, dimethyl ester 8, pentanedioic acid, dimethyl ester 9, nonanoic acid, methyl ester 10, hexanedioic acid, dimethyl ester 11, decanoic acid, methyl ester 12, heptanedioic acid, dimethyl ester 13, octanedioic acid, dimethyl ester 14, 1,2 benzenedicarboxylic acid, dimethyl ester 15, a methyl octanedioic acid, dimethyl ester 16, nonanedioic acid, dimethyl ester 17, a methoxy octanedioic acid, dimethyl ester 18, a methyl nonanedioic acid, dimethyl ester 19, a,a dimethyl nonenedioic acid, dimethyl ester 20a, a methyl nonenedioic acid, dimethyl ester 20b, a,a dimethyl nonanedioic acid, dimethyl ester 21, decanedioic acid, dimethyl ester 22, a methoxy nonanedioic acid, dimethyl ester 23, a methyl decan edioic acid, dimethyl ester 24, undecanedioic acid, dimethyl ester 25, a methoxy decan edioic acid, dimethyl ester 26, pentadecanoic acid, methyl ester 27, dodecanedioic acid, dimethyl ester 28, hexadecanoic acid, methyl ester 29, heptadecanoic acid, methyl ester 30, octadecanoic acid, methyl ester 31,8 methoxy 9 octadecenoic acid, methyl ester 32, 11 methoxy 9 octadecenoic acid, methyl ester 33, 9 methoxy 10 octadecenoic acid and 10 methoxy 8 octadecenoic acid 34, 9 oxo octadecanoic acid, 10 oxo octadecanoic acid 35, 9 epoxy octadecanoic acid 36, eicosanoic acid, methyl ester 37, 9,10 dimethoxy octadecanoic acid, methyl ester 38, docosanoic acid, methyl ester. Reprinted from J. Anal. Appl. Pyrol., 61, 1 2, van den Berg and Boon, 19, Copyright 2001, with permission from Elsevier...

Propa, Propanoic acid Buta, butanoic acid Penta, pentanoic acid Hexa, hexanoic acid Hepta, heptanoic acid Octa, octanoic acid Nona, nonanoic acid Deca, decanoic acid Pal, palmitic acid St, stearic acid Piva, trimethylacetic acid Vers, Versatic acid a-BrHexa, a-bromohexanoic acid x-BrSt, a-bromostearic acid Me2(OH)Hexa, 2,5-dimethyl-2-hydroxyhexanoic acid a,a -DAC, a,a -dialkylcarboxylic acid Naph, naphthenic acid cy-PA, cyclopentylacetic acid cy-Hexa, cyclohexanecarhoxylic acid C7-C mix, C7-C9 mixture CB, chlorobenzene cy-Hexn, cyclohexane 1,2-DCE, 1,2-dichloro-ethane (i-Pr)2CO, diisopropyl ketone i-amOAc, isoamyl acetate i-amOH, isoamyl alcohol MIBK, 4-methyl-2-pentanone NB, nitrobenzene n-Hexn, n-hexane PE, petroleum ether TCB, 1,2,4-trichlorobenzene. 

For N-methylhomatropine, the use of the cationic modifier dimethyl-octylamine reduces the value of a relative to the value obtained when the uncharged modifier 2-propanol is used. The same result occurs when the anionic modifier octanoic acid is used. However, the addition of the tetrabutylammonium bromide almost doubles the enantioselectivity relative to the value of a obtained with 2-propanol. When atropine is the solute, poor enantioselectivity is observed with neutral and cationic modifiers, whereas the addition of an anionic modifier, octanoic acid, results in an a of 1.6. 

CIC the earthy odour of fresh potatoes is represented by 2-isopropyl-3-methoxy pyrazine. This earthy note is supported by the mushroom character of l-octen-3-ol. The key component of boiled potatoes is 3-(methylthio)-propanal, balanced with dimethyl sulphide. The high reaction temperatures in baked and fried potatoes start the Maillard reaction to form mainly heterocyclic components 2-ethyl-3,5-dimethyl pyrazine, 2-ethyl-6-vinyl pyrazine, 5-methyl-6,7-dihydro-(5H)cyclopenta-pyrazine, 2-acetyl-l,4,5,6-tetrahydro-pyridine are responsible for the roasted, nutty cracker-like flavour. The heat-induced degradation of the potato lipids and the frying oil imparts a fatty, tallowy character to the french fried potatoes. (E,E)-2,4-Decadienal, 2-octenal, octanoic acid and decanoic acid are main contributors to this fatty note. 

The dynamics of mixtures of surfactants with proteins is of great importance for many practical processes, such as coating of photographic films, where gelatine in mixtures with surfactants and surface active dyes adsorb at the interface. Hempt et al. (1985) studied the relaxation behaviour of gelatine solutions in presence and absence of surfactants (SDS, tetradecyl dimethyl phosphine oxide, cetyltrimethyl ammonium bromide, n-decanoic acid, perfluoro octanoic acid tetraethyl ammonium salt). 

H-Pyrrole-1-acetic acid, 2-formyl-a,5-dimethyl-1H-Pyrrole-1-acetic acid, 2-formyl-a-hexyl-1H-Pyrrole-1-acetic acid, 2-formyl-a-methyl-1H-Pyrrole-1-butanoic acid, 2-formyl-1H-Pyrrole-1-butanoic acid, 2-formyl-y-methyl-1H-Pyrrole-1-butanoic acid, 2-formyl-5-methyl-1H-Pyrrole-1-hexanoic acid, 2-formyl-1H-Pyrrole-1-octanoic acid, 2-formyl-1H-Pyrrole-1-octanoic acid, 2-formyl-5-methyl-1H-Pyrrole-1-propanoic acid, p-ethyl-2-formyl-1H-Pyrrole-1-propanoic acid, 2-formyl-p-methyl-... 

Butanedioic acid, 3-(2,3-dihydroxypropoxy)-2-hydroxypropyi ester, mixed esters with octanoic acid and decanoic acid. See Caprylic/capric digiyceryl succinate Butanedioic acid, ((dimethoxyphosphinyi) thio)-, diethyl ester. See Malaoxon Butanedioic acid, dimethyl ester. See Dimethyl succinate... 

Lauryl dimethylamine N-Lauryl dimethylamine. See Dimethyl lauramine Lauryl dimethylamine acrylinoleate Lauryl dimethylamine C21-dicarboxylate. See Lauryl, dimethylamine cyclocarboxypropyloleate Lauryl dimethylamine cyclocarboxypropyloleate Synonyms Cyclocarboxypropyloleic acid, lauryl dimethylamine salt 2-Cyclohexene-1-octanoic acid, 5-carboxy-4-hexyl-, salt with N,N-dimethyldodecanamine (1 1) Lauryl dimethylamine acrylinoleate Lauryl dimethylamine C21-dicarboxylate Classification Amine salt Empirical C35H67NO4... 

Synonyms 2,2-Dimethyl-1,3-propanediyl dioctanoate 2,2-Dimethyl-1,3-propanediyl 2-ethylhexanoate 2-Ethylhexanoic acid, 2,2-dimethyl-1,3-propanediyl ester Octanoic acid, 2,2-dimethyl-1,3-propanediol diester Definition Diester of neopentyl glycol and 2-ethylhexanoic acid Empirical C21H40O4 Toxicology TSCA listed Uses Emollient, solvent, pigment dispersant for cosmetics solvent for makeup removers Features Low freeze pt. 

Octanoic acid, 2,2-dimethyl-, 2-octyldodecyl ester. See Octyidodecyl neodecanoate Octanoic acid, 2,2-dimethyl-1,3-propanediol diester. See Neopentyl glycol dioctanoate Octanoic acid ethyl ester. See Ethyl octanoate Octanoic acid, 2-ethyl-2-(((1-oxooctyl) oxy) methyl)-1,3-propanediyl ester. See Trimethylolpropane trioctanoate Octanoic acid, hexadecyl ester. See Cetyl caprylate... 

Octyidodecyl neodecanoate Synonyms Neodecanoic acid, octyidodecyl ester Octanoic acid, 2,2-dimethyl-, 2-octyldodecyl ester Definition Ester of octyidodecanol and neodecanoic acid Empirical C30H60O2... 

The lUPAC nomenclature is based on the longest continuous chain (alkane, alkene, or alkyne based) that contains the carboxyl carbon (the -COOH unit). As with aldehydes, the carbon of the COOH group is always at one terminus of the chain and must receive the lowest possible number (1), which is omitted from the name. The suffix for carboxylic acids is oic acid, with the word acid separated from the first part of the name. As with aldehydes and ketones, the carboxyl unit is higher in priority than an alkene or alkyne. Compound 38 is an eight-carbon acid with an alkane backbone, so it is octanoic acid (note the short notation for the carboxyl group). Substituents are numbered relative to the carbonyl carbon of the COOH unit, so 39 is 2,2-dimethyl-5-phenyloctanoic acid. In a similar manner, 40 is named 16-chloro-4-ethylheptadecanoic acid. 

P,P-Dimethyl butyric acid 2-Methylhexanoic acid P-Methyl, p-ethyl butyric acid 2-Methylheptanoic acid 2-Methyl heptanoic acid 2-Methyl octanoic acid... 

C19H38O2 2,2-dimethyl-octanoic acid nonyl ester 17701-39-2... 

C20H40O2 2,2-dimethyl-octanoic acid decyl ester 17701-41-6... 

Isolated from the species Lyngbya semiplena collected at a shallow depth (1-3 m) in Wewak Bay, Papua New Guinea, the wewakpeptins A-D are cytotoxic depsipeptides which contain many nonribosomal amino acids such as 2,2-dimethyl-3-hydroxy-octanoic acid (Dhoaa) and 2,2-dimethyl-3-hydroxy-octynoic (Dhoya), as well as N-methy-lated amino adds such as N-methylvahne and N-methyl-alanine. A second lactone implies 2-hydroxy-isovaleric add (Hiva) for wewakpeptins A and B, and phenyllactic add (Pla) for wewakpeptins C and D. Wewakpeptins A and B are approximately tenfold more cytotoxic towards the lung cancer NCI-H460 than are wewakpeptins C and D (Han et al, 2005b). 

Much effort has been devoted to the optimization of the polyesterification reaction. For instance, different types of monomeric precursors structurally related to succinic acid (e.g., dimethyl succinate or succinic anhydride) were used. Different kinds of catalysts (e.g., phenolates, titanium alkoxides, tin octanoates) at different concentrations were studied. Different reaction temperatures (130-190 °C) were reached and different procedures for water elimination (vacuum drying under different conditions or toluene distillation) were adopted. Experimental results obtained showed that the use of different catalysts and different monomer precursors (succinic acid derivatives) did not significantly alter the polymerization kinetics or yield, and for this reason, they were abandoned. The procedure finally adopted is summarized below. 

Decanoic acid, 2,2-dimethyl-1,3-propanediol diester. See Neopentyl glycol dicaprate Decanoic acid, ester with 2,2 -[oxybis (methylene)] bis [2-(hydroxymethyl)-1,3-propanediol] octanoate pentanoate. See Dipentaerythrityl hexacaprylate/hexacaprate Decanoic acid, ester with 1,2,3-propanetriol octanoate. See Glyceryl decanoate octanoate Decanoic acid ethyl ester. See Ethyl decanoate Decanoic acid, methyl ester. See Methyl caprate... 

Propyl octanoate Propyl pelargonate Propyl valerate Pyrocatechol . Rosemary (Rosmarinus officinalis) extract L-Serine Sodium benzoate Sodium mono- and dimethyl naphthalene sulfonates Sorbic acid Thiamine HCI... 

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