Exact Mass: 678.6678306

Exact Mass Matches: 678.6678306

Found 165 metabolites which its exact mass value is equals to given mass value 678.6678306, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

Cyclolaudenyl palmitate

15-(5,6-Dimethylhept-6-en-2-yl)-7,7,12,16-tetramethylpentacyclo[9.7.0.0¹,³.0³,⁸.0¹²,¹⁶]octadecan-6-yl hexadecanoic acid

C47H82O2 (678.6314472)

Cyclolaudenyl palmitate is found in cereals and cereal products. Cyclolaudenyl palmitate is isolated from corn pollen (Zea mays Isolated from corn pollen (Zea mays). Cyclolaudenyl palmitate is found in cereals and cereal products and fats and oils.

CE(20:1(11Z))

(2R,5S,15R)-2,15-Dimethyl-14-[(2R)-6-methylheptan-2-yl]tetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-5-yl (11Z)-icos-11-enoic acid

C47H82O2 (678.6314472)

CE(20:1(11Z)) is a cholesterol fatty acid ester or simply a cholesterol ester (CE). Cholesterol esters are cholesterol molecules with long-chain fatty acids linked to the hydroxyl group. They are much less polar than free cholesterol and appear to be the preferred form for transport in plasma and for storage. Cholesterol esters do not contribute to membranes but are packed into intracellular lipid particles or lipoprotein particles. Because of the mechanism of synthesis, plasma cholesterol esters tend to contain relatively high proportions of C18 fatty acids. Cholesterol esters are major constituents of the adrenal glands and they also accumulate in the fatty lesions of atherosclerotic plaques. Cholesterol esters are also major constituents of the lipoprotein particles carried in blood (HDL, LDL, VLDL). The cholesterol esters in high-density lipoproteins (HDL) are synthesized largely by transfer of fatty acids to cholesterol from position sn-2 (or C-2) of phosphatidylcholine catalyzed by the enzyme lecithin cholesterol acyl transferase (LCAT). The enzyme also promotes the transfer of cholesterol from cells to HDL. As cholesterol esters accumulate in the lipoprotein core, cholesterol is removed from its surface thus promoting the flow of cholesterol from cell membranes into HDL. This in turn leads to morphological changes in HDL, which grow and become spherical. Subsequently, cholesterol esters are transferred to the other lipoprotein fractions LDL and VLDL, a reaction catalyzed by cholesteryl ester transfer protein. Another enzyme, acyl-CoA:cholesterol acyltransferase (ACAT) synthesizes cholesterol esters from CoA esters of fatty acids and cholesterol. Cholesterol ester hydrolases liberate cholesterol and free fatty acids when required for membrane and lipoprotein formation, and they also provide cholesterol for hormone synthesis in adrenal cells. Cholesteryl eicosapentaenoic acid is a cholesteryl ester. A cholesteryl ester is an ester of cholesterol. Fatty acid esters of cholesterol constitute about two-thirds of the cholesterol in the plasma. Cholesterol is a sterol (a combination steroid and alcohol) and a lipid found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. The accumulation of cholesterol esters in the arterial intima (the innermost layer of an artery, in direct contact with the flowing blood) is a characteristic feature of atherosclerosis. Atherosclerosis is a disease affecting arterial blood vessels. It is a chronic inflammatory response in the walls of arteries, in large part to the deposition of lipoproteins (plasma proteins that carry cholesterol and triglycerides). In patients with triglyceride levels above 500 mg/dl, approximately 4 g/day of eicosapentaenoic acid reduces triglyceride levels 45\\% and very low-density lipoprotein cholesterol levels by more than 50\\%. Physical exercise and fish oil (a rich source of eicosapentaenoic acid) suppress the activity of endothelial lipase (EL) and this, in turn, enhances the plasma concentrations of HDL cholesterol. EL has been shown to have a significant role in modulating the concentrations of plasma HDL. (PMID: 17461707, 15664301, 15524182, 15485592). CE(20:1(11Z)) is a cholesterol fatty acid ester or simply a cholesterol ester (CE). Cholesterol esters are cholesterol molecules with long-chain fatty acids linked to the hydroxyl group. They are much less polar than free cholesterol and appear to be the preferred form for transport in plasma and for storage. Cholesterol esters do not contribute to membranes but are packed into intracellular lipid particles or lipoprotein particles. Because of the mechanism of synthesis, plasma cholesterol esters tend to contain relatively high proportions of C18 fatty acids. Cholesterol esters are major constituents of the adrenal glands and they also accumulate in the fatty lesions of atherosclerotic plaques. Cholesterol esters are also major constituents of the lipoprotein particles carried in blood (HDL, LDL, VLDL). The cholesterol esters in high-density lipoproteins (HDL) are synthesized largely by transfer of fatty acids to cholesterol from position sn-2 (or C-2) of phosphatidylcholine catalyzed by the enzyme lecithin cholesterol acyl transferase (LCAT). The enzyme also promotes the transfer of cholesterol from cells to HDL. As cholesterol esters accumulate in the lipoprotein core, cholesterol is removed from its surface thus promoting the flow of cholesterol from cell membranes into HDL. This in turn leads to morphological changes in HDL, which grow and become spherical. Subsequently, cholesterol esters are transferred to the other lipoprotein fractions LDL and VLDL, a reaction catalyzed by cholesteryl ester transfer protein. Another enzyme, acyl-CoA:cholesterol acyltransferase (ACAT) synthesizes cholesterol esters from CoA esters of fatty acids and cholesterol. Cholesterol ester hydrolases liberate cholesterol and free fatty acids when required for membrane and lipoprotein formation, and they also provide cholesterol for hormone synthesis in adrenal cells.

24-Methylene-cycloartanol palmitate

(1S,3R,6S,8R,11S,12S,15R,16R)-7,7,12,16-tetramethyl-15-[(2R)-6-methyl-5-methylideneheptan-2-yl]pentacyclo[9.7.0.0¹,³.0³,⁸.0¹²,¹⁶]octadecan-6-yl hexadecanoate

C47H82O2 (678.6314472)

24-methylene-cycloartanol palmitate belongs to cycloartanols and derivatives class of compounds. Those are steroids containing a cycloartanol moiety. 24-methylene-cycloartanol palmitate is practically insoluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). 24-methylene-cycloartanol palmitate can be found in french plantain, which makes 24-methylene-cycloartanol palmitate a potential biomarker for the consumption of this food product.

Stigmasteryl stearate

14-[(3E)-5-ethyl-6-methylhept-3-en-2-yl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-en-5-yl octadecanoate

C47H82O2 (678.6314472)

Stigmasteryl stearate is a member of the class of compounds known as triterpenoids. Triterpenoids are terpene molecules containing six isoprene units. Stigmasteryl stearate is practically insoluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). Stigmasteryl stearate can be found in anise, which makes stigmasteryl stearate a potential biomarker for the consumption of this food product.

(10R)-3c-(Octadecen-(9c)-oyloxy)-10r.13c-dimethyl-17c-((1R:4R)-1.5-dimethyl-4-aethyl-hexyl)-(8cH.9tH.14tH)-Delta5-tetradecahydro-1H-cyclopenta[a]phenanthren|3beta-Oleoyloxy-24alphaF-aethyl-cholesten-(5)|3beta-oleoyloxy-stigmastene-(5)|O-Oleoyl-(beta-)sitosterin|Oelsaeure-(stigmasten-(5)-yl-(3beta)-ester)|sitosteryl oleate|sitostreryl oleate

(10R)-3c-(Octadecen-(9c)-oyloxy)-10r.13c-dimethyl-17c-((1R:4R)-1.5-dimethyl-4-aethyl-hexyl)-(8cH.9tH.14tH)-Delta5-tetradecahydro-1H-cyclopenta[a]phenanthren|3beta-Oleoyloxy-24alphaF-aethyl-cholesten-(5)|3beta-oleoyloxy-stigmastene-(5)|O-Oleoyl-(beta-)sitosterin|Oelsaeure-(stigmasten-(5)-yl-(3beta)-ester)|sitosteryl oleate|sitostreryl oleate

C47H82O2 (678.6314472)