Exact Mass: 278.0943

Exact Mass Matches: 278.0943

Found 159 metabolites which its exact mass value is equals to given mass value 278.0943, within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error 0.001 dalton.

Tuliposide A

(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl 4-hydroxy-2-methylidenebutanoate

C11H18O8 (278.1002)

Tuliposide a is a member of the class of compounds known as hexoses. Hexoses are monosaccharides in which the sugar unit is a is a six-carbon containing moeity. Tuliposide a is soluble (in water) and a very weakly acidic compound (based on its pKa). Tuliposide a can be found in garden onion, which makes tuliposide a a potential biomarker for the consumption of this food product.

6-Tuliposide A

6-O-(4-hydroxy-2-methylene-butanoyl)-beta-D-glucopyranose

C11H18O8 (278.1002)

A 6-O-acyl-D-glucose that is the 6-O-(4-hydroxy-2-methylenebutanoyl) derivative of D-glucopyranose.

Gamma-Glutamylmethionine

(2S)-2-amino-4-{[(1S)-1-carboxy-3-(methylsulfanyl)propyl]carbamoyl}butanoic acid

C10H18N2O5S (278.0936)

gamma-Glutamylmethionine is a dipeptide composed of gamma-glutamate and methionine, and is a proteolytic breakdown product of larger proteins. It belongs to the family of N-acyl-alpha amino acids and derivatives. These are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom. gamma-Glutamylmethionine is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. gamma-Glutamylmethionine is found in onion-family vegetables. It is isolated from the seeds of onion (Allium cepa), kidney bean (Phaseolus vulgaris), mung bean (Vigna radiata), garlic (Allium sativum), and black gram (Vigna mungo).

Glutamylmethionine

Glutamic acid-methionine dipeptide

C10H18N2O5S (278.0936)

Glutamylmethionine is a dipeptide composed of glutamate and methionine, and is a proteolytic breakdown product of larger proteins. It belongs to the family of N-acyl-alpha amino acids and derivatives. These are compounds containing an alpha amino acid which bears an acyl group at its terminal nitrogen atom. Glutamylmethionine is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.

Methionyl-Glutamate

2-{[2-amino-1-hydroxy-4-(methylsulphanyl)butylidene]amino}pentanedioic acid

C10H18N2O5S (278.0936)

Methionyl-Glutamate is a dipeptide composed of methionine and glutamate. It is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. This dipeptide has not yet been identified in human tissues or biofluids and so it is classified as an Expected metabolite.

Isovalerylglucuronide

(2S,3S,4S,5R,6S)-3,4,5-trihydroxy-6-[(3-methylbutanoyl)oxy]oxane-2-carboxylic acid

C11H18O8 (278.1002)

Isovaleryl glucuronide has been identified in the urine of patients with isovaleric acidemia made possible by using gas chromatograph-mass spectrometry (GC-MS). Isovaleryl glucuronide is more likely to be excreted when the amount of urinary 3-hydroxyisovaleric acid excretion is high. Isovaleryl glucuronide is more likely to be excreted when the amount of urinary 3-hydroxyisovaleric acid excretion is high. (PMID: 6547525). Isovaleric acidemia is caused by mutation in the isovaleryl CoA dehydrogenase gene and is closely related to maple syrup urine disease. It presents in two forms: the acute neonatal form, leading to massive metabolic acidosis from the first days of life and rapid death and a chronic form in which periodic attacks of severe ketoacidosis occur with asymptomatic intervening periods. (OMIM 243500). Isovaleryl glucuronide has been identified in the urine of patients with isovaleric acidemia made possible by using gas chromatograph-mass spectrometry (GC-MS). Isovaleryl glucuronide is more likely to be excreted when the amount of urinary 3-hydroxyisovaleric acid excretion is high. Isovaleryl glucuronide is more likely to be excreted when the amount of urinary 3-hydroxyisovaleric acid excretion is high. (PMID: 6547525)

(2-Chlorophenyl)diphenylmethane

1-chloro-2-(diphenylmethyl)benzene

C19H15Cl (278.0862)

1,2-Dihydrotanshinquinone

6,14-dimethyl-12-oxatetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-1(10),2(7),5,8,11(15),13-hexaene-16,17-dione