Exact Mass: 263.11708980000003
Exact Mass Matches: 263.11708980000003
Found 149 metabolites which its exact mass value is equals to given mass value 263.11708980000003,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
desethylzaleplon
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
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.
5-Amino-2-[(2-amino-3-carboxypropanoyl)oxyamino]pentanoic acid
Dioxypyramidon
C13H17N3O3 (263.12698520000004)
CONFIDENCE standard compound; EAWAG_UCHEM_ID 2708
(S)-8-acetyl-4-methoxy-9-methyl-6,7,8,9-tetrahydro-[1,3]dioxolo[4,5-h]isoquinoline|N-acetyl-anhalonine|N-Acetylanhalomine
C14H17NO4 (263.11575220000003)
1-ethyl-5-(7-hydroxy-benzo[1,3]dioxol-5-yl)-piperidin-2-one|Campedin|campedine
C14H17NO4 (263.11575220000003)
Dioxypyramidon
C13H17N3O3 (263.12698520000004)
CONFIDENCE standard compound; EAWAG_UCHEM_ID 2708
2-(2,2-Diethoxyethyl)-1H-isoindole-1,3(2H)-dione
C14H17NO4 (263.11575220000003)
1-(4-ISOPROPOXY-PHENYL)-5-OXO-PYRROLIDINE-3-CARBOXYLIC ACID
C14H17NO4 (263.11575220000003)
4-HYDROXY-2,5-DIMETHYL-3-(MORPHOLINOMETHYL)-6-OXO-1,3-CYCLOHEXADIENE-1-CARBONITRILE
C13H17N3O3 (263.12698520000004)
N-Cbz- Piperidine-3-carboxylic acid
C14H17NO4 (263.11575220000003)
1-Benzylpyrrolidine-3,4-dicarboxylic acid monomethyl ester
C14H17NO4 (263.11575220000003)
2-(2-formylphenoxy)-N-(oxolan-2-ylmethyl)acetamide
C14H17NO4 (263.11575220000003)
(s)-piperidine-1,3-dicarboxylic acid 1-benzyl ester
C14H17NO4 (263.11575220000003)
METHYL 6-HYDROXY-7-(1-METHYLALLYL)-5-OXO-1,2,3,5-TETRAHYDROINDOLIZINE-8-CARBOXYLATE
C14H17NO4 (263.11575220000003)
3-Dimethylamino-1-(naphthalen-1-yl)propan-1-one hydrochloride
(S)-1-Benzyl 3-Methyl pyrrolidine-1,3-dicarboxylate
C14H17NO4 (263.11575220000003)
Methyl 1-(4-methoxybenzyl)-5-oxo-3-pyrrolidinecarboxylate
C14H17NO4 (263.11575220000003)
1,3-dimethyl-5-[2-(1-methylpyrrolidin-2-ylidene)ethylidene]-1,3-diazinane-2,4,6-trione
C13H17N3O3 (263.12698520000004)
1-BENZYL 2-METHYL 2-METHYLPYRROLIDINE-1,2-DICARBOXYLATE
C14H17NO4 (263.11575220000003)
3,4,5-trimethoxy-2-(methoxymethyl)cinnamonitrile
C14H17NO4 (263.11575220000003)
TRANS-4-(1,1-DIMETHYLETHYLSULFONAMIDO)CYCLOHEXANECARBOXYLIC ACID
4-BENZYLOXY-3-AMINO-A-[-BENZYL-N-(1-METHYL-2P-METHOXY PHENYL ETHER) AMINO-METHYL BENZYL ALCOHOL
N-Cbz-Piperidine-2-carboxylic acid
C14H17NO4 (263.11575220000003)
1-benzyl 2-Methyl pyrrolidine-1,2-dicarboxylate
C14H17NO4 (263.11575220000003)
(d)-n-(benzyloxycarbonyl)pipecolic acid
C14H17NO4 (263.11575220000003)
(l)-n-(benzyloxycarbonyl)pipecolic acid
C14H17NO4 (263.11575220000003)
N-(2-chloro-6-formylpyridin-3-yl)pivalamide
C13H17N3O3 (263.12698520000004)
(S)-1-Benzyl 2-methyl pyrrolidine-1,2-dicarboxylate
C14H17NO4 (263.11575220000003)
1-BOC-2,3-DIHYDRO-INDOLE-3-CARBOXYLIC ACID
C14H17NO4 (263.11575220000003)
2-[3-(Benzyloxy)phenyl]ethanamine hydrochloride (1:1)
2-(1-(Benzyloxycarbonyl)pyrrolidin-2-yl)acetic acid
C14H17NO4 (263.11575220000003)
Benzyl 1,4-dioxa-7-azaspiro[4.4]nonane-7-carboxylate
C14H17NO4 (263.11575220000003)
(S)-ETHYL 4-BENZYL-5-OXOMORPHOLINE-3-CARBOXYLATE
C14H17NO4 (263.11575220000003)
4-ethyl-3-[(4-ethylphenoxy)methyl]-1H-1,2,4-triazole-5-thione
tert-Butyl (3-oxo-1,2,3,4-tetrahydroquinoxalin-6-yl)carbamate
C13H17N3O3 (263.12698520000004)
1-(2,2-DIMETHOXY-ETHYL)-4-ETHYL-1H-INDOLE-2,3-DIONE
C14H17NO4 (263.11575220000003)
N-(4-nitrophenyl)-2-piperidin-1-ylacetamide
C13H17N3O3 (263.12698520000004)
(R)-Benzyl 4-formyl-2,2-dimethyloxazolidine-3-carboxylate
C14H17NO4 (263.11575220000003)
2-(4-METHOXYPHENYL)-2-PHENYLETHYLAMINE HYDROCHLORIDE
2-Chloro-1-(2,2,4,7-tetramethyl-2H-quinolin-1-yl)-ethanone
1 2 3 4-TETRAHYDRO-9-ACRIDINECARBOXYLIC&
C14H17NO4 (263.11575220000003)
tert-butyl 3-amino-4-methoxyindazole-1-carboxylate
C13H17N3O3 (263.12698520000004)
DL-5-Benzoylamino-5-isopropyl-4-oxo-1,3-dioxane
C14H17NO4 (263.11575220000003)
6-AMINO-5-OXO-[1,4]DIAZEPANE-1-CARBOXYLICACIDBENZYLESTER
C13H17N3O3 (263.12698520000004)
(S)-1-(TERT-BUTOXYCARBONYL)INDOLINE-2-CARBOXYLIC ACID
C14H17NO4 (263.11575220000003)
2-(tert-Butoxycarbonyl)isoindoline-1-carboxylicacid
C14H17NO4 (263.11575220000003)
1-BENZYL 3-METHYL PYRROLIDINE-1,3-DICARBOXYLATE
C14H17NO4 (263.11575220000003)
3-(3,4-DIHYDROISOQUINOLIN-2(1H)-YL)PROPAN-1-OL
C14H17NO4 (263.11575220000003)
5-(TERT-BUTYL)-3,3-DIMETHYL-6-NITROBENZOFURAN-2(3H)-ONE
C14H17NO4 (263.11575220000003)
Tetrahydrozoline nitrate
C13H17N3O3 (263.12698520000004)
2-[(2-methylpropan-2-yl)oxycarbonyl]-1,3-dihydroisoindole-5-carboxylic acid
C14H17NO4 (263.11575220000003)
1-(4-METHOXY-BENZOYL)-PIPERIDINE-4-CARBOXYLIC ACID
C14H17NO4 (263.11575220000003)
Propanedioic acid,2-[(phenylamino)methylene]-, 1,3-diethyl ester
C14H17NO4 (263.11575220000003)
{3-[(2,4-Dimethylphenoxy)methyl]-phenyl}amine hydrochloride
1-Propanone,3-(dimethylamino)-1-(2-naphthalenyl)-, hydrochloride (1:1)
1-[(TERT-BUTOXY)CARBONYL]-2,3-DIHYDRO-1H-INDOLE-5-CARBOXYLIC ACID
C14H17NO4 (263.11575220000003)
1-O-benzyl 3-O-methyl 3-methylazetidine-1,3-dicarboxylate
C14H17NO4 (263.11575220000003)
ETHYL 8-METHOXY-2-OXO-2,3,4,5-TETRAHYDRO-1H-BENZO[B]AZEPINE-4-CARBOXYLATE
C14H17NO4 (263.11575220000003)
ETHYL 2-(N-BENZOYLAMINOMETHYL)-3-OXOBUTYRATE
C14H17NO4 (263.11575220000003)
1-Piperidinecarboxylic acid, 4-(Methylsulfonyl)-, 1,1-dimethylethyl ester
1-(4-ethoxybenzoyl)pyrrolidine-2-carboxylic acid
C14H17NO4 (263.11575220000003)
METHYL 6-HYDROXY-7-(2-METHYLALLYL)-5-OXO-1,2,3,5-TETRAHYDROINDOLIZINE-8-CARBOXYLATE
C14H17NO4 (263.11575220000003)
4-(diethylamino)benzenediazonium tetrafluoroborate
(R)-1-((Benzyloxy)carbonyl)piperidine-3-carboxylic acid
C14H17NO4 (263.11575220000003)
1-(tert-Butoxycarbonyl)-2-indolinecarboxylic acid
C14H17NO4 (263.11575220000003)
(2S)-2-cyclohexyl-2-(pyrazine-2-carbonylamino)acetic acid
C13H17N3O3 (263.12698520000004)
4-phenyl-4,10-dihydro-[1,3,5]triazino[1,2-a]benzimidazol-2-amine
N-methyl-6-phenyl-3-(2-pyridinyl)-1,2,4-triazin-5-amine
2-[3-(4-Cyanoanilino)-1-(dimethylamino)-2-propenylidene]malononitrile
8-(Pyrimidin-2-ylamino)naphthalene-2-carboximidamide
2-Tert-butyl-6,7-dimethoxy-3,1-benzoxazin-4-one
C14H17NO4 (263.11575220000003)
N-[2-(4-methoxyphenyl)ethyl]-2,3-dihydro-1,4-dioxin-5-carboxamide
C14H17NO4 (263.11575220000003)
4-tert-butyl-2-{(2E)-2-[(5-methylfuran-2-yl)methylidene]hydrazinyl}-1,3-thiazole
(3R)-5-[(2R,3R,5R,6S)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-3-hydroxypentanoate
C11H19O7- (263.11307239999996)
(3S,4R)-4-[(2S,3R,5R,6S)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-3-hydroxypentanoate
C11H19O7- (263.11307239999996)
Benzylmethylamino-1,2-bis(methoxycarbonyl)ethylene
C14H17NO4 (263.11575220000003)
7-[3-(ethylamino)phenyl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile
N-(N-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)carbamimidoyl)-N-methylglycine
Dioxoaminopyrine
C13H17N3O3 (263.12698520000004)
A monocarboxylic acid amide that is N,N-dimethyl-2-oxoacetamide substituted by a 2-acetyl-2-methyl-1-phenylhydrazinyl group at position 2. It is a metabolite of the drug aminopyrine.
1-hydroxy-3-(4-hydroxyphenyl)-4-(2-methylpropyl)pyrrolidine-2,5-dione
C14H17NO4 (263.11575220000003)
n-(2-carbamimidoylethyl)-4-hydroxy-2-imino-1h,7h-pyrrolo[2,3-d]pyrimidine-5-carboximidic acid
4,5-dihydroxy-3-methoxy-5-methyl-6-(phenylamino)cyclohex-2-en-1-one
C14H17NO4 (263.11575220000003)
(2e)-3-(7-hydroxy-2h-1,3-benzodioxol-5-yl)-n-(2-methylpropyl)prop-2-enimidic acid
C14H17NO4 (263.11575220000003)
4-methoxy-8,15-dioxa-7-azatetracyclo[7.6.1.0¹,¹².0²,⁷]hexadeca-10,12-dien-14-one
C14H17NO4 (263.11575220000003)
(1s,2s,4s,9s)-4-methoxy-8,15-dioxa-7-azatetracyclo[7.6.1.0¹,¹².0²,⁷]hexadeca-10,12-dien-14-one
C14H17NO4 (263.11575220000003)
(3r,4s)-1-hydroxy-3-(4-hydroxyphenyl)-4-(2-methylpropyl)pyrrolidine-2,5-dione
C14H17NO4 (263.11575220000003)
3-(7-hydroxy-2h-1,3-benzodioxol-5-yl)-n-(2-methylpropyl)prop-2-enimidic acid
C14H17NO4 (263.11575220000003)
(4r,5r,6s,7s)-1-isothiocyanatodecane-4,5,6,7-tetrol
(4r,5r,6r)-4,5-dihydroxy-3-methoxy-5-methyl-6-(phenylamino)cyclohex-2-en-1-one
C14H17NO4 (263.11575220000003)
(3s,4r)-1-hydroxy-3-(4-hydroxyphenyl)-4-(2-methylpropyl)pyrrolidine-2,5-dione
C14H17NO4 (263.11575220000003)