Exact Mass: 258.9844
Exact Mass Matches: 258.9844
Found 18 metabolites which its exact mass value is equals to given mass value 258.9844,
within given mass tolerance error 4.0E-5 dalton. Try search metabolite list with more accurate mass tolerance error
8.0E-6 dalton.
3-Bromotyrosine
3-Bromotyrosine(BY) is generated from the halogenation of tyrosine residues in plasma proteins via the enzyme Eosinophil peroxidase. The presence of free bromotyrosine in blood or urine is the result of enzymatic degradation of these brominated proteins. A significantly higher concentration of BY was observed in the urine from asthmatic patients than in that from healthy control subjects (PMID: 15196282). Bromotyrosine may be useful for monitoring the activation of eosinophils in asthmatic patients. 3-Bromotyrosine(BY) is generated from the halogenation of tyrosine residues in plasma proteins via the enzyme Eosinophil peroxidase. A significantly higher concentration of BY was observed in the urine from asthmatic patients than in that from healthy control subjects (PMID: 15196282). [HMDB]
ETHYL 5-BROMO-1-METHYL-6-OXO-1,6-DIHYDROPYRIDINE-3-CARBOXYLATE
3-AMINO-3-(3-BROMO-4-HYDROXY-PHENYL)-PROPIONIC ACID
3-Bromo-L-tyrosine
A bromoamino acid comprising an L-tyrosine core with a bromo- substituent ortho to the hydroxy group on the benzene ring.
