Exact Mass: 263.1217

Exact Mass Matches: 263.1217

Found 170 metabolites which its exact mass value is equals to given mass value 263.1217, within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error 0.001 dalton.

7-Mercaptoheptanoylthreonine

C11H21NO4S (263.1191)

Girinimbine

5,5,8-trimethyl-6-oxa-17-azatetracyclo[8.7.0.0^{2,7}.0^{11,16}]heptadeca-1,3,7,9,11,13,15-heptaene

C18H17NO (263.131)

Girinimbine is a member of carbazoles. It has a role as a metabolite. Girinimbine is a natural product found in Clausena vestita, Murraya euchrestifolia, and other organisms with data available. Girinimbine is found in herbs and spices. Girinimbine is an alkaloid from the roots of Murraya koenigii (curry leaf tree A natural product found in Clausena harmandiana.

(E,E)-Lansamide I

(2E)-N-methyl-3-phenyl-N-[(Z)-2-phenylethenyl]prop-2-enamide

C18H17NO (263.131)

(E,E)-Lansamide I is found in fruits. (E,E)-Lansamide I is an alkaloid from the leaves and seeds of Clausena lansium (wampee

Lansiumamide B

(2E)-N-methyl-3-phenyl-N-[(E)-2-phenylethenyl]prop-2-enamide

C18H17NO (263.131)

Lansiumamide B is found in fruits. Lansiumamide B is isolated from seeds of Clausena lansium (wampee). Isolated from seeds of Clausena lansium (wampee). Lansiumamide B is found in fruits.

desethylzaleplon

7-[3-(ethylamino)phenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile

C15H13N5 (263.1171)

desethylzaleplon is a metabolite of zaleplon. Zaleplon (marketed under the brand names Sonata and Starnoc) is a sedative/hypnotic, mainly used for insomnia. It is a nonbenzodiazepine hypnotic from the pyrazolopyrimidine class. In terms of adverse effects zaleplon appears to offer little improvement compared to both benzodiazepines and other non-benzodiazepine Z-drugs. Sonata (US) is manufactured by King Pharm. of Bristol, TN; Starnoc has been discontinued in Canada. (Wikipedia)

Creatine riboside

N-(N-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)carbamimidoyl)-N-methylglycine

C9H17N3O6 (263.1117)

Creatine riboside is a conjugate between creatine and ribose. It is a novel diagnostic marker for lung cancer that is elevated in the urine of non-small cell lung cancer subjects (PMID: 24736543). Creatine riboside may be a product of both high creatine levels within tumor cells and the characteristic high phosphate flux of cancer cells. Increased mutagenicity of creatine and ribose pyrolysis products in cooked foods has been reported, suggesting a functional role of creatine riboside in tumorigenesis (PMID: 24736543). Creatine riboside is likely not an enzyme-synthesized product as it can be formed spontaneously by mixing creatine with ribose. It can be synthesized in modestly high yields by reacting ribose and creatine in the presence of ammonium bicarbonate and heating the two compounds at 80°C for 10 minutes.

Didesethyl Chloroquine

N4-(7-chloroquinolin-4-yl)pentane-1,4-diamine

C14H18ClN3 (263.1189)

Boc-D-FMK

methyl 3-{[(tert-butoxy)carbonyl]amino}-5-fluoro-4-oxopentanoate

C11H18FNO5 (263.1169)

N(6)-L-Homocysteinyl-L-lysine

2-Amino-6-[(2-amino-4-sulfanylbutanoyl)amino]hexanoic acid

C10H21N3O3S (263.1304)

5-Amino-2-[(2-amino-3-carboxypropanoyl)oxyamino]pentanoic acid

5-amino-2-{[(2-amino-3-carboxypropanoyl)oxy]amino}pentanoic acid

C9H17N3O6 (263.1117)

2-cis-abscisate

5-(1-hydroxy-2,6,6-trimethyl-4-oxocyclohex-2-en-1-yl)-3-methylpenta-2,4-dienoic acid

C15H19O4 (263.1283)

2-cis-abscisate is practically insoluble (in water) and a weakly acidic compound (based on its pKa). 2-cis-abscisate can be found in a number of food items such as common wheat, lemon thyme, black raspberry, and acorn, which makes 2-cis-abscisate a potential biomarker for the consumption of these food products.