Sun, Zhe et al. published their research in Shiyou Huagong in 2016 | CAS: 1731-94-8

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Reference of 1731-94-8

Effect of crude oil composition on ternary composite alkali-surfactant-polymer flooding was written by Sun, Zhe;Sun, Xuefa;Lu, Xiangguo;Chen, Xin;Yu, Qin;Tian, Chunyu. And the article was included in Shiyou Huagong in 2016.Reference of 1731-94-8 The following contents are mentioned in the article:

The interactions between oil/water samples from different districts in Daqing oilfield with ternary composite alkali-surfactant-polymer (ASP) system were studied. The effects of the crude oil compositions on the crude oil production increment with ASP system and the properties of the produced fluid were studied. The oil/water samples, extracted active ingredients, raffinate oil and sulfur content in the oil phase were analyzed by means of FTIR, GC-MS and XRF. It was showed that, the characteristic peaks of the active ingredients in the oil/water samples accorded with the features of typical saturated monocarboxylic acids (fatty acids and naphthenic acids). The concentration of n-alkanes with heavy component in the raffinate oil from the Lamadian oil/water sample was higher, and its composition was closer to that of the surfactant (heavy alkylbenzene sulfonates). It was indicated that, the interfacial tensions between the ASP system and the active ingredients in the oil/water samples or the raffinate oil were high, but there were ultra-low interfacial tensions between the ASP system and the crude oils. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Reference of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Reference of 1731-94-8

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