Investigation of the unsaponifiable and saponifiable matters of Pachypodium lamerei drake leaves and stems by GC/MS was written by El-Kashef, Dina F.;Hamed, Ashraf N. E.;Khalil, Hany E.;Kamel, Mohamed S.. And the article was included in Journal of Pharmacognosy and Phytochemistry in 2014.Computed Properties of C20H40O2 The following contents are mentioned in the article:
Pachypodium lamerei Drake (family Apocynaceae) is native to Madagascar and is known as Madagascar palm. The present study shows that, the unsaponifiable matter of P. lamerei contains various compounds identified as hydrocarbons (5.43%), pregnane (0.92%), steroids (11.54%), triterpenes (8.78%) as well as other oxygenated compounds (61.3%). While, the saponifiable matter contains twenty compounds from which ten were identified as Me esters of saturated fatty acids (32.31%) in addition to hydroxylated fatty acids (9.96%) whereas ten fatty acids (57.73%) couldn’t be identified. This is the first record of the GC/MS anal. for genus Pachypodium. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Computed Properties of 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. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Computed Properties of C20H40O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics