Hexadecanoic acid, methyl ester

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...

Analyses of methanolic extracts of the male webbing clothes moth (WCM), Tineola hisselliella (Hum.) (Lepidoptera Tineidae) showed three candidate pheromone components namely, hexadecanoic acid methyl ester, (.Z)-9-hexadecenoic acid methyl ester, and octadec-anoic acid methyl ester. In bioassay experiments, the 16 carbon esters were attractive to both males and virgin females but the 18 carbon ester was inactive. The extracts of female WCM showed two compounds as candidate sex pheromone components, namely (T, )-2,13-octadecadienal and E,Z) 2,13-octadecadienol. The synthetic samples of the aldehyde and alcohol were attracting WCM males in bioassay experiments successfully ... 

Heterodendrin, epi Epidermis Hexadecanoic acid methyl ester Lf 078 Hor V 9 P1HV164 Hordein B Caryopsis ... 

F.36) (F.36) Hexadecanoic acid, methyl ester, methyl palmitate, methyl hexadecanoate 1112-39-0]... 

AI3-03509 EINECS 203-966-3 Emery 2216 Hexadecanoic acid, methyl ester n-Hexadecanoic acid methyl ester HSDB 5570 Metholene 2216 Methyl hexadecanoate Methyl n-hexadecanoate Methyl palmitate NSC 4197 Palmitic acid, methyl ester Radia 7120 Uniphat A60 Emery 2216 Radia 7120. Chemical intermediate, chemical synthesis lubricant in mineral, cutting, lamination, textile oils, and rust inhibitors textile and leather application. Used as a chemical intermediate, chemical synthesis lubricant in mineral, cutting, lamination, textile oils, and rust inhibitors textile and leather application. Solvent for pesticides and herbicides. Solid mp = 30° bp = 417°, bp30 = 211°, bp2 = 148° d20 = 0,8520, d n 0.8247 insoluble in H2O, soluble in Et20, very soluble in EtOH, Me2CO, CeHs, CHCI3. Fina Chemicals Henkel/Emery Penta Mfg. Stepan. 

Hexadecanoic acid, methyl ester. See Methyl palmitate... 

Fig. 2. Chemical structures of typical slick-forming compounds, a.) oleyl alcohol (Z-9-octadecen-l-ol OLA), b.) oleic acid methyl ester (methyl Z-9-octadecenoate OLME), and c.) methyl palmitate (methyl hexadecanoate PME)...

Hexabutyidistannoxane. SeeTributyltin oxide Hexacid C9. See Nonanoic acid Hexadecafluoroheptane. See Perfluoroheptane Hexadecanaminium, N-methyl-N,N-bis (hexadecyl)-, chloride. See Tricetylmonium chloride Hexadecanoic acid. See Palmitic acid Hexadecanoic acid, 2-ethylhexyl ester. See Octyl palmitate Hexadecanoic acid, hexadecyl ester. See Cetyl palmitate Hexadecanoic acid isopropyl ester Hexadecanoic acid, 1-methylethyl ester. See Isopropyl palmitate Hexadecanoic acid, zinc salt. See Zinc palmitate 1-Hexadecanol. See Cetyl alcohol... 

Acylation of mesoionic pyrido[l,2-u]pyrimidin-4-ones 150 with aroyl chlorides in the presence of NEts yielded 2-aroyloxy-4//-pyrido[l,2-u]pyrimidin-4-ones 178 (96JHC663). None of the esters 178 could be rearranged to the 2-hydroxy-3-aroyl derivatives 179. The hydroxy group of 9-hydroxy-2-methyl-3- 2-[4-(6-fluoro-l,2-benzisoxazol-3-yl)-l-piperidinyl] ethyl -6,7,8,9-tetrahydro-4//-pyrido[l, 2-u]pyrimidin-4-one was acylated with hexadecanoic acid in CH2CI2 in the presence of dicyclohexylcarbodi-imide and 4-pyrrolidinopyridine at room temperature for 3 days in 80% yield (97MIP7). 

Palmitic acid (hexadecanoic acid) [57-10-3] M 256.4, m 63-64 . Crystd from EtOH. Purified via the methyl ester (b 193-194°/ 12mm, n 1.4359) as for capric acid, or by zone melting. 

Total fatty acids were liberated by subjecting Salmonella minnesota Re lipopolysaccharide (or free lipid A) to acidic (4 N HC1, 5 h, 100°C) followed by alkaline (1 N NaOH, 1 h, 100°C) hydrolysis. After extraction (chloroform), the free fatty acids were converted into their methyl esters (diazomethane) and analysed by combined gas-liquid chromatography/mass spectrometry. Alternatively, the fatty acids of lipid A are transesterified by treatment of lipopolysaccharide with methanolic HC1 (2 N HC1 in water-free CHaOH, 18 h, 85°C). By these procedures the following fatty acids were identified (in approximate amounts relative to 2 moles glucosamine) dodecanoic (12 0, 1.1 mole), tetradecanoic (14 0, 0.8 mole), hexadecanoic (16 0, 0.9 mole), 2-hydroxytetradecanoic (2-OH-l4 0, 0.1 mole), and 3-hydroxytetradecanoic acid (3-OH-14 0, 4 moles). In total, therefore, approximately 7 moles of fatty acids are present per mole of lipid A backbone. The stereochemistry of the hydroxylated fatty acids was determined by gas-liquid chromatography of their diastereomeric methoxyacyl-L-phenylethylamide derivatives (24). It was found that 2-hydroxyte-tradecanoic acid possesses the-Ts), and the predominating 3-hydroxytetradecanoic acid the (R) configuration. 

Quantitative changes in lipid compounds on the silk and cuticle of females correlate significantly with changes in female sexual receptivity in spiders. For example, female T. atrica attach a contact sex pheromone to their web (Trabalon et al., 1997,2005 Prouvost et al., 1999). This pheromone consists of a complex mixture of saturated hydrocarbons, methyl esters (methyl tetradecanoate, methyl pentadecanoate, methyl hexadecanoate, and methyl octadecanoate) and their fatty acids (tetradecanoic, pentadecanoic, hexadecanoic, and cis,cis-9,12-octadecadienoic acids). The female uses cuticular compounds, which are applied to the silk in substantial amounts during web construction. Modification of chemical profiles makes the female attractive to males (Trabalon et al., 2005). Receptive females are different to unreceptive ones with respect to three fatty acids (hexadecanoic, octadeca-dienoic and octadecenoic acids) and three methyl esters (linoleate, oleate, and stearate) present on both the web and the cuticle. Our combined results from chemical analyses and behavioral assays demonstrate clearly that these contact compounds are quantitatively correlated with the behavior of spiders. 

Hexadecanoic acid, 14-methyl-, methyl ester H3C-CH2-CH(CH3)- CH2)i2-COO-CH3 809, 4249 2917a ... 

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