Huang, Jinzhi et al. published their research in Shipin Kexue (Beijing, China) in 2015 | CAS: 1731-94-8

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C20H40O2

Correlation analysis of physicochemical indexes with lipid oxidation characteristics during manufacturing process of fermented cantonese sausages was written by Huang, Jinzhi;Yang, Rongling;Tang, Daobang;Liu, Xueming. And the article was included in Shipin Kexue (Beijing, China) in 2015.Formula: C20H40O2 The following contents are mentioned in the article:

The acid value (AV) and peroxide value (POV), triobarbituric acid (TBA) value, carbonyl value, total acidity, moisture content, free fatty acid and fat during the production process of fermented Cantonese sausages were determined and their correlations were analyzed. The results showed that the AV, POV, TBA and carbonyl value increased as the production process proceeded. The contents of saturated fatty acids and free fatty acids were enhanced during the whole roasting process while the content of unsaturated fatty acids declined from 8 h onwards, which may be due to the continuous oxidation and hydrolysis of fat during the manufacturing process. In addition, pos. correlations among acid value, peroxide value, TBA, carbonyl value, total acid, moisture and fat content were observed POV was significantly correlated with total acidity. Therefore, rancidity degree and the degree of fat oxidation showed consistent trends during the manufacturing process. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Formula: C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Formula: C20H40O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics