Exact Mass: 139.890818
Exact Mass Matches: 139.890818
Found 20 metabolites which its exact mass value is equals to given mass value 139.890818,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
Cerium
Ce (139.905442)
Cerium, also known as 58ce or cer, is a member of the class of compounds known as homogeneous lanthanide compounds. Homogeneous lanthanide compounds are inorganic compounds containing only metal atoms, with the largest atom being a lanthanide atom. Cerium can be found in a number of food items such as black-eyed pea, cucumber, spinach, and orange bell pepper, which makes cerium a potential biomarker for the consumption of these food products. Cerium can be found primarily in blood, cerebrospinal fluid (CSF), saliva, and urine. Cerium is a chemical element with symbol Ce and atomic number 58. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 oxidation state characteristic of the series, it also exceptionally has a stable +4 state that does not oxidize water. It is also traditionally considered one of the rare-earth elements. Cerium has no biological role and is not very toxic . An element of the rare earth family of metals. It has the atomic symbol Ce, atomic number 58, and atomic weight 140.12. Cerium is a malleable metal used in many industrial applications including catalysts, additives to fuel to reduce emissions, and to glass and enamels to change their color.
arsenate(2-)
An arsenate ion resulting from the removal of two protons from arsenic acid.