Hexadecanedioic acid

Hexadecanedioic acid (thaspic acid). [505-54-4] M 286.4, m 126°, pKEst(i) 4.5, P st(2) S-S. Crystd from EtOH, ethyl acetate or C6H6. 

InteresPng, though hardly of practical value, is the oxidation of 1 -fluorooctadecane by yeast of genus Torulopsis gropengiessen to give a 9% yield of octadecanedioic acid and a 4 5% yield of hexadecanedioic acid [/]... 

Hexachlorocyclopentadiene, ethylation to l,2,3,4,5-pentachloro-5-ethyl-cyclopentadiene, 43, 90 Hexadecanedioic acid, 43, 39... 

Hexadecanedioic acid. [505-54-4] M 286.4, m 126°. Crystd from EtOH or ethyl acetate. 

Hexadecanedioic Acid Monomethylazelate Soda Aromatic Co. (Japan) Not available Crum Brown-Walkerc... 

Most of the poly(etherketone-carborane)s so far prepared are non-crystalline and thus readily soluble in organic solvents such as chloroform or NMP, from which tough, coherent films and coatings can be obtained by solvent evaporation. However, we have found two polymers of this type, both derivatives of p-carborane, which display significant levels of crystallinity.8 Thus, the semi-aliphatic polymer derived from bis(4-phenoxyphenyl)-p-carborane (3) and hexadecanedioic acid (6) undergoes solvent-induced crystallisation on contact with NMP, and then shows a crystal melting point of 122 °C. 

C16H30O4 hexadecanedioic acid 505-54-4 25.00 0.9397 2 29889 C17H120 2-naphthyl phenyl ketone 644-13-3 25.00 1.1506 2... 

The degradation of alkanoic acids by P-oxidation has been noted parenthetically above, but alternative pathways may occur. For example, the metabolism of hexanoic acid by strains of Pseudomonas sp. may take place by co-oxidation with subsequent formation of succinate and 2-tetrahydrofurany-lacetate as a terminal metabolite (Kunz and Weimer 1983). In a strain of Cory neb acterium sp., the specificities of the relevant catabolic enzymes are consistent with the production of dodecanedioic acid by co-oxidation of dode-cane but not of hexadecanedioic acid from hexadecane (Broadway et al. 1993). Hydroxylation at subterminal (co-1, co-2, and co-3) positions of carboxylic acids with chain lengths of 12 to 18—and less readily of the corresponding alcohols, but not the carboxylic acids or the alkanes—has been observed (Miura and Fulco 1975) for a soluble enzyme system from a strain of Bacillus megaterium. Whereas in this organism co-2 hydroxylation is carried out by a soluble cytochrome P-450 BM 3 (Narhi and Fulco 1987), co-hydroxylation in P. oleovorans that carries the OCT plasmid is mediated by a three-component hydroxylase that behaves like a cytoplasmic membrane protein (Ruettinger et al. 1974 Kok et al. 1989). 

Thapsic acid (hexadecanedioic acid) may be isolated from the dried roots of Thapsia garganica, a Mediterranean, umbelliferous plant, which was known already In ancient times to be poisonous (due to thapsigargin and other components). In Arabian caravans it was called "deadly carrot," because camels would eat it and die quickly... 

Oxalic acid Malonic acid Succinic acid Glutaric acid Adipic acid Pimelic acid Suberic acid Azelaic acid Sebacic acid Brassylic acid Docosanedioic acid Undecanedioic acid Tetracosanedioic acid Hexadecanedioic acid... 

Hexadecanal, H-00163 Hexadecanamide, in H-00168 >1-Hexadecanamine, see H-00205 Hexadecane, H-00164 Hexadecanedioic acid, H-00165... 

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