Vaccenic Acid
Title: Vaccenic Acid
CAS Registry Number: 693-72-1
CAS Name: (11E)-11-Octadecenoic acid
Additional Names: trans-D11-octadecenoic acid
Molecular Formula: C18H34O2
Molecular Weight: 282.46
Percent Composition: C 76.54%, H 12.13%, O 11.33%
Line Formula: CH3(CH2)5CH=CH(CH2)9COOH
Literature References: Found in butterfat and in other animal fats. Growth-promoting factor for rats. Isoln: Bertram, Biochem. Z. 197, 433 (1928). Synthesis: Böeseken, 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.
Melting point: mp 43-44°
Index of refraction: nD60 1.4439; nD70 1.4402
 
Derivative Type: Methyl ester
Molecular Formula: C19H36O2
Molecular Weight: 296.49
Percent Composition: C 76.97%, H 12.24%, O 10.79%
Properties: bp3 172-173°.
Boiling point: bp3 172-173°

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