Chemical composition and antimicrobial activity of the essential oil and lipid content of Carduus pycnocephalus L. growing in Saudi Arabia was written by Al-Shammari, Latifa A.;Hassan, Wafaa H. B.;Al-Youssef, Hanan M.. And the article was included in Journal of Chemical and Pharmaceutical Research in 2012.COA of Formula: C12H22O4 This article mentions the following:
The essential oil of the air dried aerial parts of Carduus pycnocephalus L. F. Asteraceae was prepared by hydrodistillation GC/MS anal. revealed the presence of nineteen components representing 100% of the total oil. Hexadecanoic acid (39.62%) was the prominent component of the oil. GC/MS anal. of the unsaponifiable matter of the petroleum ether extract of the aerial parts of the plant revealed the presence of nineteen compounds; sixteen compounds were identified constituting 72.80% of total unsaponifiable matter. Olean-12-en-3-α-ol (20.39%), ursa-9(11), 12-dien-3-ol (17.74%) and hexadecanoic acid (17.62%) were the major components. GC/MS anal. of fatty acid Me ester showed the presence of twenty fatty acids Me esters (91.38%). The main known components were 1,2benzendicarboxylic acid dimethylester (31.08), palmitic acid Me ester (20.08%) and azelaic acid di-Me ester (7.60%). The antimicrobial, antispasmodic and anti-inflammatory effects were studied. The volatile oil and petroleum ether extract showed no antimicrobial activity, while the petroleum ether extract showed antispasmodic, anti-inflammatory effects. This is the first study on chem. composition and biol. activities of the volatile oil and lipid contents of Carduus pycnocephalus L. endemic for Saudi Arabia. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6COA of Formula: C12H22O4).
Dimethyl decanedioate (cas: 106-79-6) 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. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.COA of Formula: C12H22O4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics