未知物定性求助

应助达人

16.623 Bergamal IFF，

34.038 Jasmopol

应助达人

38.787 Lilial diethyl acetal，

40.225 Muscolide/Macrolide

朱老师，Lilial diethyl acetal 是不是和Canthoxal diethyl acetal 很相近呢，我自己看的时候怎么和之前我这贴http://bbs.instrument.com.cn/shtml/20121229/4473867/ 里Canthoxal diethyl acetal 匹配 两个都是99 ，不知为什么

另外Jasmopol 和Muscolide/Macrolide 这两个是什么，我查不到，您能给个CAS号吗

应助达人

Lilial diethyl acetal 和Canthoxal diethyl acetal差别较明显：

应助达人

抱歉，40.225看错成Muscolide/Macrolide，应该是Helional和乙醇的反应物。

应助达人

Jasmopol cas037172-53-5

应助达人

Title 14-Methylpentadecano-15-lactone(muscolide): A new macocyclic lactone from the oil of Angelica archangelica L.
Authors D.Lopes, H.Strobl and P.Kolodziejczyk
Journal Chemical and Biodiversity, 1(12), 1880-1887.
Keywords ESSO; ANALYT; COMPON; LACTONE

Abstract The chemical composition of seed and root oils from Angelica archangelica L. was investigated. Analyses were performed by gc/MS and gc using two columns of different polarities (polyethylene glycol (DB-Wax) and 5% phenyl/95% polydimethylsiloxane (HP-5)), for the separation of several co-eluting components. A total of 58 compounds were identified, accounting for 96.3% (seed) and 93.5% (root) of the oils, respectively. A high content of beta-phellandrene (74.7%) was found in Angelica seed oil. Root oil contained a larger amount of macrocyclic lactones (1.3%) in comparison to the seed oil (0.4%). Different harvest dates produced only slight changes in the root-oil composition. In root oil harvested in summer, the P-phellandrene content increased by ca. 36%, but no significant changes in the relative compositions of other components were observed. Fresh root oils were collected in five fractions (constant time intervals) during steam distillation (see Table). The highest- boiling fraction contained 9.3% of macrocyclic lactones such as tridecano-13-lactone (5.0%), 12-methyltridecano-13-lactone (0.4%), tetradecano-14-lactone (0.1%), pentadecano-15-lactone (3.5%), 14-methylpentadecano-15-lactone (1; trace), hexadecano-16-lactone (trace), and heptadecano-17-lactone (0.2%). This is the first report of the occurrence of 14-methylpentadecano-15-lactone (muscolide; 1) in a natural product.