Chemical constituents analysis in ground part of Gentiana macrophylla pall by SFE-GC-MS was written by Wang, Yanping;Ma, Xiao. And the article was included in Zhongguo Xiandai Yingyong Yaoxue in 2011.Computed Properties of C12H22O4 This article mentions the following:
The objective of this paper is to identify compounds in supercritical fluids extraction of ground part of Gentiana macrophylla Pall. GC-MS was used to analyze the constituents and the sample was extracted by supercritical fluids. The AT-SE54 capillary column (30 m × 0.25 mm × 0.25 μm) was used and inlet temperature was maintained at 260°. The column oven was begun at 80°, then programmed from 80° to 290° at 4° min-1, and hold for 30 min. Helium at a constant flow rate of 1.2 mL/min-1 was used as carrier gas. Ion source temperature was 230° and ionization energy was 70 eV. Results show that the total of 72 components were separated and 70 components were identified from flowers of Gentiana macrophylla Pall, accounting for 84.1% of total extractant. A total of 67 components were separated and 66 components were identified from stems and leaves of Gentiana macrophylla Pall, accounting for 93.1% of total extractant. It was concluded that the results will provide important foundation for understanding the constituents and further exploitation for ground part of Gentiana macrophylla Pall. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Computed Properties of C12H22O4).
Dimethyl decanedioate (cas: 106-79-6) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. 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.Computed Properties of C12H22O4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics