Exact Mass: 656.5015628000001

Exact Mass Matches: 656.5015628000001

Found 391 metabolites which its exact mass value is equals to given mass value 656.5015628000001, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

PA(P-16:0/18:2(9Z,12Z))

[(2R)-3-[(1Z)-hexadec-1-en-1-yloxy]-2-[(9Z,12Z)-octadeca-9,12-dienoyloxy]propoxy]phosphonic acid

C37H69O7P (656.4780653999999)

2-(9Z,12Z-octadecadienoyl)-1-(1Z-hexadecenyl)-sn-glycero-3-phosphate is an intermediate of ether lipid metabolism. Ether lipids are lipids in which one or more of the carbon atoms on glycerol is bonded to an alkyl chain via an ether linkage, as opposed to the usual ester linkage. 2-(9Z,12Z-octadecadienoyl)-1-(1Z-hexadecenyl)-sn-glycero-3-phosphate is irreversibly produced from 2-(9Z,12Z-octadecadienoyl)-1-(1Z-hexadecenyl))-sn-glycero-3-phosphoethanolamine via the enzyme phospholipase D (EC: 3.1.4.4). Plasmalogens are glycerol ether phospholipids. They are of two types, alkyl ether (-O-CH2-) and alkenyl ether (-O-CH=CH-). Dihydroxyacetone phosphate (DHAP) serves as the glycerol precursor for the synthesis of plasmalogens. Three major classes of plasmalogens have been identified: choline, ethanolamine and serine derivatives. Ethanolamine plasmalogen is prevalent in myelin. Choline plasmalogen is abundant in cardiac tissue. Usually, the highest proportion of the plasmalogen form is in the ethanolamine class with rather less in choline, and commonly little or none in other phospholipids such as phosphatidylinositol. In choline plasmalogens of most tissues, a higher proportion is often of the O-alkyl rather than the O-alkenyl form, but the reverse tends to be true in heart lipids. In animal tissues, the alkyl and alkenyl moieties in both non-polar and phospholipids tend to be rather simple in composition with 16:0, 18:0 and 18:1 (double bond in position 9) predominating. Ether analogues of triacylglycerols, i.e. 1-alkyldiacyl-sn-glycerols, are present at trace levels only if at all in most animal tissues, but they can be major components of some marine lipids. 2-(9Z,12Z-octadecadienoyl)-1-(1Z-hexadecenyl)-sn-glycero-3-phosphate is an intermediate of ether lipid metabolism. Ether lipids are lipids in which one or more of the carbon atoms on glycerol is bonded to an alkyl chain via an ether linkage, as opposed to the usual ester linkage.

DG(20:3n9/0:0/18:2n6)

(2S)-2-Hydroxy-3-[(9Z,12Z)-nonadeca-9,12-dienoyloxy]propyl (5Z,8Z,11Z)-icosa-5,8,11-trienoic acid

C42H72O5 (656.5379462)

DG(20:3n9/0:0/18:2n6) is a diglyceride, or a diacylglycerol (DAG). It is a glyceride consisting of two fatty acid chains covalently bonded to a glycerol molecule through ester linkages. Diacylglycerols can have many different combinations of fatty acids attached at the C-1, C-2, or C-3 positions. DG(20:3n9/0:0/18:2n6), in particular, consists of one chain of mead acid at the C-1 position and one chain of linoleic acid at the C-3 position. The mead acid moiety is derived from fish oils, liver and kidney, while the linoleic acid moiety is derived from seed oils. Mono- and diacylglycerols are common food additives used to blend together certain ingredients, such as oil and water, which would not otherwise blend well. Dacylglycerols are often found in bakery products, beverages, ice cream, chewing gum, shortening, whipped toppings, margarine, and confections.
Synthesis of diacylglycerol begins with glycerol-3-phosphate, which is derived primarily from dihydroxyacetone phosphate, a product of glycolysis (usually in the cytoplasm of liver or adipose tissue cells). Glycerol-3-phosphate is first acylated with acyl-coenzyme A (acyl-CoA) to form lysophosphatidic acid, which is then acylated with another molecule of acyl-CoA to yield phosphatidic acid. Phosphatidic acid is then de-phosphorylated to form diacylglycerol.
Diacylglycerols are precursors to triacylglycerols (triglyceride), which are formed by the addition of a third fatty acid to the diacylglycerol under the catalysis of diglyceride acyltransferase. Since diacylglycerols are synthesized via phosphatidic acid, they will usually contain a saturated fatty acid at the C-1 position on the glycerol moiety and an unsaturated fatty acid at the C-3 position.

DG(18:2n6/0:0/20:3n6)

(2R)-2-hydroxy-3-[(9Z,12Z)-nonadeca-9,12-dienoyloxy]propyl (8Z,11Z,14Z)-icosa-8,11,14-trienoate

C42H72O5 (656.5379462)

DG(18:2n6/0:0/20:3n6) is a diglyceride, or a diacylglycerol (DAG). It is a glyceride consisting of two fatty acid chains covalently bonded to a glycerol molecule through ester linkages. Diacylglycerols can have many different combinations of fatty acids attached at the C-1, C-2, or C-3 positions. DG(18:2n6/0:0/20:3n6), in particular, consists of one chain of linoleic acid at the C-1 position and one chain of homo-g-linolenic acid at the C-3 position. The linoleic acid moiety is derived from seed oils, while the homo-g-linolenic acid moiety is derived from fish oils, liver and kidney. Mono- and diacylglycerols are common food additives used to blend together certain ingredients, such as oil and water, which would not otherwise blend well. Dacylglycerols are often found in bakery products, beverages, ice cream, chewing gum, shortening, whipped toppings, margarine, and confections.
Synthesis of diacylglycerol begins with glycerol-3-phosphate, which is derived primarily from dihydroxyacetone phosphate, a product of glycolysis (usually in the cytoplasm of liver or adipose tissue cells). Glycerol-3-phosphate is first acylated with acyl-coenzyme A (acyl-CoA) to form lysophosphatidic acid, which is then acylated with another molecule of acyl-CoA to yield phosphatidic acid. Phosphatidic acid is then de-phosphorylated to form diacylglycerol.
Diacylglycerols are precursors to triacylglycerols (triglyceride), which are formed by the addition of a third fatty acid to the diacylglycerol under the catalysis of diglyceride acyltransferase. Since diacylglycerols are synthesized via phosphatidic acid, they will usually contain a saturated fatty acid at the C-1 position on the glycerol moiety and an unsaturated fatty acid at the C-3 position.

DG(16:0/22:6(5Z,7Z,10Z,13Z,16Z,19Z)-OH(4)/0:0)

(2S)-1-(hexadecanoyloxy)-3-hydroxypropan-2-yl (5Z,7Z,10Z,13Z,16Z,19Z)-4-hydroxydocosa-5,7,10,13,16,19-hexaenoate