9898. Vaccenic Acid
Nomenclature
CAS number: 693-72-1
(11E)-11-Octadecenoic acid; trans-Δ11-octadecenoic acid. C18H34O2; mol wt 282.46.
C 76.54%, H 12.13%, O 11.33%.
Description and references
Found in butterfat and in other animal fats. Growth-promoting factor for rats. Isoln: Bertram, Biochem. Z. 197, 433 (1928). Synthesis: Beseken, Hoagland, Rec. Trav. Chim. 46, 632 (1927); Ahmad et al., J. Am. Chem. Soc. 70, 3391 (1948). Configuration and ir spectrum: Rao, Daubert, ibid. 1102.
Properties
Platelets from acetone, mp 43-44°; nD60 1.4439; nD70 1.4402. Neutralization equivalent 282.5; iodine no. 89.9.Derivative
Methyl ester.Nomenclature
CAS number: 6198-58-9
Methyl vaccenate. C19H36O2; mol wt 296.49.
C 76.97%, H 12.24%, O 10.79%.