Exact Mass: 744.5778

Exact Mass Matches: 744.5778

Found 500 metabolites which its exact mass value is equals to given mass value 744.5778, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

1-Hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphonocholine

C42H83NO7P (744.5907)

PA(15:0/24:1(15Z))

[(2R)-3-(pentadecanoyloxy)-2-[(15Z)-tetracos-15-enoyloxy]propoxy]phosphonic acid

C42H81O8P (744.5669)

PA(15:0/24:1(15Z)) is a phosphatidic acid. It is a glycerophospholipid in which a phosphate moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidic acids can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 16, 18 and 20 carbons are the most common. PA(15:0/24:1(15Z)), in particular, consists of one chain of pentadecanoic acid at the C-1 position and one chain of nervonic acid at the C-2 position. Phosphatidic acids are quite rare but are extremely important as intermediates in the biosynthesis of triacylglycerols and phospholipids.

PA(24:1(15Z)/15:0)

[(2R)-2-(pentadecanoyloxy)-3-[(15Z)-tetracos-15-enoyloxy]propoxy]phosphonic acid

C42H81O8P (744.5669)

PA(24:1(15Z)/15:0) is a phosphatidic acid. It is a glycerophospholipid in which a phosphate moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidic acids can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 16, 18 and 20 carbons are the most common. PA(24:1(15Z)/15:0), in particular, consists of one chain of nervonic acid at the C-1 position and one chain of pentadecanoic acid at the C-2 position. Phosphatidic acids are quite rare but are extremely important as intermediates in the biosynthesis of triacylglycerols and phospholipids.

SM(d18:0/18:1(12Z)-O(9S,10R))

(2-{[(2S,3R)-3-hydroxy-2-(8-{3-[(2Z)-oct-2-en-1-yl]oxiran-2-yl}octanamido)octadecyl phosphono]oxy}ethyl)trimethylazanium

C41H81N2O7P (744.5781)

SM(d18:0/18:1(12Z)-O(9S,10R)) is a type of oxidized sphingolipid found in animal cell membranes. It usually consists of phosphorylcholine and ceramide. SM(d18:0/18:1(12Z)-O(9S,10R)) consists of a sphingosine backbone and a 9,10-epoxy-octadecenoyl chain. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. Like all sphingolipids, SM has a ceramide core (sphingosine bonded to a fatty acid via an amide linkage). In addition, it contains one polar head group, which is either phosphocholine or phosphoethanolamine. The plasma membrane of cells is highly enriched in sphingomyelin and is considered largely to be found in the exoplasmic leaflet of the cell membrane. However, there is some evidence that there may also be a sphingomyelin pool in the inner leaflet of the membrane. Moreover, neutral sphingomyelinase-2, an enzyme that breaks down sphingomyelin into ceramide, has been found to localize exclusively to the inner leaflet further suggesting that there may be sphingomyelin present there. Sphingomyelin can accumulate in a rare hereditary disease called Niemann-Pick Disease, types A and B. Niemann-Pick disease is a genetically-inherited disease caused by a deficiency in the enzyme sphingomyelinase, which causes the accumulation of sphingomyelin in spleen, liver, lungs, bone marrow, and the brain, causing irreversible neurological damage. SMs play a role in signal transduction. Sphingomyelins are synthesized by the transfer of phosphorylcholine from phosphatidylcholine to a ceramide in a reaction catalyzed by sphingomyelin synthase.

SM(d18:0/18:1(9Z)-O(12,13))

(2-{[(2S,3R)-3-hydroxy-2-[(9Z)-11-(3-pentyloxiran-2-yl)undec-9-enamido]octadecyl phosphono]oxy}ethyl)trimethylazanium

C41H81N2O7P (744.5781)

SM(d18:0/18:1(9Z)-O(12,13)) is a type of oxidized sphingolipid found in animal cell membranes. It usually consists of phosphorylcholine and ceramide. SM(d18:0/18:1(9Z)-O(12,13)) consists of a sphingosine backbone and a 12,13-epoxy-octadecenoyl chain. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. Like all sphingolipids, SM has a ceramide core (sphingosine bonded to a fatty acid via an amide linkage). In addition, it contains one polar head group, which is either phosphocholine or phosphoethanolamine. The plasma membrane of cells is highly enriched in sphingomyelin and is considered largely to be found in the exoplasmic leaflet of the cell membrane. However, there is some evidence that there may also be a sphingomyelin pool in the inner leaflet of the membrane. Moreover, neutral sphingomyelinase-2, an enzyme that breaks down sphingomyelin into ceramide, has been found to localize exclusively to the inner leaflet further suggesting that there may be sphingomyelin present there. Sphingomyelin can accumulate in a rare hereditary disease called Niemann-Pick Disease, types A and B. Niemann-Pick disease is a genetically-inherited disease caused by a deficiency in the enzyme sphingomyelinase, which causes the accumulation of sphingomyelin in spleen, liver, lungs, bone marrow, and the brain, causing irreversible neurological damage. SMs play a role in signal transduction. Sphingomyelins are synthesized by the transfer of phosphorylcholine from phosphatidylcholine to a ceramide in a reaction catalyzed by sphingomyelin synthase.