Exact Mass: 268.13106700000003

Exact Mass Matches: 268.13106700000003

Found 500 metabolites which its exact mass value is equals to given mass value 268.13106700000003, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

dymron

Daimuron

C17H20N2O (268.157555)

Isomethiozin

C12H20N4OS (268.135775)

Diethylstilbestrol

4-[4-(4-hydroxyphenyl)hex-3-en-3-yl]phenol

C18H20O2 (268.146322)

Diethylstilbestrol is a synthetic estrogen that was developed to supplement a womans natural estrogen production. In 1971, the Food and Drug Administration (FDA) issued a Drug Bulletin advising physicians to stop prescribing DES to pregnant women because it was linked to a rare vaginal cancer in female offspring. Diethylstilbesterol is found in gram bean. Diethylstilbestrol is a synthetic nonsteroidal estrogen used in the treatment of menopausal and postmenopausal disorders. It was also used formerly as a growth promoter in animals. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), diethylstilbestrol has been listed as a known carcinogen. (Merck, 11th ed). G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CC - Estrogens, combinations with other drugs G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CB - Synthetic estrogens, plain L - Antineoplastic and immunomodulating agents > L02 - Endocrine therapy > L02A - Hormones and related agents > L02AA - Estrogens D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones > D004967 - Estrogens C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D009676 - Noxae > D002273 - Carcinogens

Michlers ketone

Bis[4-(dimethylamino)phenyl]methanone

C17H20N2O (268.157555)

INTERNAL_ID 250; CONFIDENCE standard compound; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9520; ORIGINAL_PRECURSOR_SCAN_NO 9519 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9492; ORIGINAL_PRECURSOR_SCAN_NO 9487 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9500; ORIGINAL_PRECURSOR_SCAN_NO 9498 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9534; ORIGINAL_PRECURSOR_SCAN_NO 9532 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9547; ORIGINAL_PRECURSOR_SCAN_NO 9546 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9470; ORIGINAL_PRECURSOR_SCAN_NO 9468 CONFIDENCE standard compound; INTERNAL_ID 250; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 9520; ORIGINAL_PRECURSOR_SCAN_NO 9519 CONFIDENCE standard compound; INTERNAL_ID 2291 CONFIDENCE standard compound; INTERNAL_ID 8123 CONFIDENCE standard compound; INTERNAL_ID 4144

Equilin

Estra-1,3,5(10),7-tetraen-17-one, 3-hydroxy-

C18H20O2 (268.146322)

D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones Same as: D04041

Pentostatin

(8R)-3-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-3H,6H,7H,8H-imidazo[4,5-d][1,3]diazepin-8-ol

C11H16N4O4 (268.1171496)

Pentostatin is only found in individuals that have used or taken this drug. It is a potent inhibitor of adenosine deaminase. The drug is effective in the treatment of many lymphoproliferative malignancies, particularly hairy-cell leukemia. It is also synergistic with some other antineoplastic agents and has immunosuppressive activity. [PubChem]Pentostatin is a potent transition state inhibitor of adenosine deaminase (ADA), the greatest activity of which is found in cells of the lymphoid system. T-cells have higher ADA activity than B-cells, and T-cell malignancies have higher activity than B-cell malignancies. The cytotoxicity that results from prevention of catabolism of adenosine or deoxyadenosine is thought to be due to elevated intracellular levels of dATP, which can block DNA synthesis through inhibition of ribonucleotide reductase. Intracellular activation results in incorporation into DNA as a false purine base. An additional cytotoxic effect is related to its incorporation into RNA. Cytotoxicity is cell cycle phase-specific (S-phase). D000970 - Antineoplastic Agents > D000903 - Antibiotics, Antineoplastic > D005573 - Formycins L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents D004791 - Enzyme Inhibitors > D058892 - Adenosine Deaminase Inhibitors C471 - Enzyme Inhibitor > C2157 - Adenosine Deaminase Inhibitor

Histidylleucine

(2S)-2-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanamido]-4-methylpentanoic acid

C12H20N4O3 (268.15353300000004)

Histidylleucine is a dipeptide composed of histidine and leucine. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.

Lysergic acid

6-Methyl-9,10-didehydroergoline-8-carboxylic acid

C16H16N2O2 (268.12117159999997)

An ergoline alkaloid comprising 6-methylergoline having additional unsaturation at the 9,10-position and a carboxy group at the 8-position.

4-METHYL-2,4-BIS(4-HYDROXYPHENYL)PENT-1-ENE

Phenol, 4,4-(1,1-dimethyl-3-methylene-1,3-propanediyl)bis-

C18H20O2 (268.146322)

Nbbcc

butyl 9H-pyrido[3,4-b]indole-3-carboxylate

C16H16N2O2 (268.12117159999997)

3-Methylcholanthrene

16-methylpentacyclo[11.6.1.0²,¹¹.0⁵,¹⁰.0¹⁷,²⁰]icosa-1,3,5,7,9,11,13(20),14,16-nonaene

C21H16 (268.1251936)

17-Dihydro Equilenin

17alpha-Dihydroequilenin

C18H20O2 (268.146322)

Oprea1_798169

3-Hydroxyestra-1,3,5(10),6-tetraen-17-one

C18H20O2 (268.146322)

Indanestrol

C18H20O2 (268.146322)

4,4-(2-Ethyl-1-butenylidene)diphenol

1,1-Bis(4-hydroxyphenyl)-2-ethyl-1-butene

C18H20O2 (268.146322)

Methyldymron

N-methyl-N-phenyl-N-(2-phenylpropan-2-yl)carbamimidic acid

C17H20N2O (268.157555)

N,N-Diacetylbenzidine

C16H16N2O2 (268.12117159999997)

5,6-Cyclopenteno-1,2-benzanthracene

2,3-Dihydro-1H-benzo[a]cyclopent[h]anthracene

C21H16 (268.1251936)

Musk ambrette

1-(1,1-Dimethylethyl)-2-methoxy-4-methylbenzene nitrated

C12H16N2O5 (268.1059166)

D009676 - Noxae > D009153 - Mutagens

RIPAZEPAM

1-ethyl-3-methyl-8-phenyl-4,6-dihydropyrazolo[4,3-e][1,4]diazepin-5-one

C15H16N4O (268.1324046)

C78272 - Agent Affecting Nervous System > C29756 - Sedative and Hypnotic > C1012 - Benzodiazepine C78272 - Agent Affecting Nervous System > C28197 - Antianxiety Agent

Razoxane

C11H16N4O4 (268.1171496)

D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D054659 - Diketopiperazines D000970 - Antineoplastic Agents > D050256 - Antimitotic Agents D050258 - Mitosis Modulators

N-acetylcarnosine

(2R)-2-({1-hydroxy-3-[(1-hydroxyethylidene)amino]propylidene}amino)-3-(1H-imidazol-5-yl)propanoate

C11H16N4O4 (268.1171496)

N-Acetylcarnosine (NAC) is a naturally-occurring compound chemically related to the dipeptide carnosine. Its molecular structure is similar to carnosine with the exception that it carries an additional acetyl group. This makes NAC a more stable molecule which is not easily destroyed by carnosinase, an enzyme that breaks down carnosine to its constituent amino acids, beta-alanine and histidine.; NAC is a free-radical scavenger and is particularly active against lipid peroxidation in the different parts of the lens in the eye. It is the active ingredient of eye drops used in order to prevent or treat cataract. [HMDB] N-Acetylcarnosine (NAC) is a naturally-occurring compound chemically related to the dipeptide carnosine. Its molecular structure is similar to carnosine with the exception that it carries an additional acetyl group. This makes NAC a more stable molecule which is not easily destroyed by carnosinase, an enzyme that breaks down carnosine to its constituent amino acids, beta-alanine and histidine. NAC is a free-radical scavenger and is particularly active against lipid peroxidation in the different parts of the lens in the eye. It is the active ingredient of eye drops used in order to prevent or treat cataract. N-Acetylcarnosine, a natural histidine-containing dipeptide, is a source of pharmacological principal L-carnosine. N-Acetylcarnosine is a potent ophthalmic agent in human cataracts[1].

Kamahine C

5,5-dihydroxy-4,4,8,8-tetramethyl-7-oxaspiro[bicyclo[3.2.1]octane-6,2-oxolan]-3-en-2-one

C14H20O5 (268.13106700000003)

Kamahine A is a constituent of honey from Weinmannia racemosa. Found in honey from Kamali (Weinmannia racemosa)

3-carboxy-4-methyl-5-pentyl-2-furanpropanoic acid

2-(2-carboxyethyl)-4-methyl-5-pentylfuran-3-carboxylic acid

C14H20O5 (268.13106700000003)

3-Carboxy-4-methyl-5-pentyl-2-furanpropanoic acid is a urofuranic acid. Urofuranic acids are usually derived from furanoic acids, and have two carboxyl groups at the 3- and 4-positions of the furan ring.

Dexrazoxane

4-[(2S)-2-(3,5-dioxopiperazin-1-yl)propyl]piperazine-2,6-dione

C11H16N4O4 (268.1171496)

An antimitotic agent with immunosuppressive properties. Dexrazoxane, the (+)-enantiomorph of razoxane, provides cardioprotection against anthracycline toxicity. It appears to inhibit formation of a toxic iron-anthracycline complex. [PubChem]. The Food and Drug Administration has designated dexrazoxane as an orphan drug for use in the prevention or reduction in the incidence and severity of anthracycline-induced cardiomyopathy. V - Various > V03 - All other therapeutic products > V03A - All other therapeutic products > V03AF - Detoxifying agents for antineoplastic treatment D000970 - Antineoplastic Agents > D059003 - Topoisomerase Inhibitors > D059005 - Topoisomerase II Inhibitors D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D054659 - Diketopiperazines D000970 - Antineoplastic Agents > D050256 - Antimitotic Agents D020011 - Protective Agents > D002316 - Cardiotonic Agents D002317 - Cardiovascular Agents D050258 - Mitosis Modulators D004791 - Enzyme Inhibitors

Seryltyrosine

(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-(4-hydroxyphenyl)propanoic acid

C12H16N2O5 (268.1059166)

Seryltyrosine is a dipeptide composed of serine and tyrosine. 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.

Isoleucyl-Histidine

2-[(2-Amino-1-hydroxy-3-methylpentylidene)amino]-3-(1H-imidazol-5-yl)propanoate

C12H20N4O3 (268.15353300000004)

Isoleucyl-Histidine is a dipeptide composed of isoleucine and histidine. 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.

Histidylisoleucine

(2S,3S)-2-{[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]amino}-3-methylpentanoic acid

C12H20N4O3 (268.15353300000004)

Histidylisoleucine is a dipeptide composed of histidine and isoleucine. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.

Tyrosyl-Serine

2-{[2-amino-1-hydroxy-3-(4-hydroxyphenyl)propylidene]amino}-3-hydroxypropanoate

C12H16N2O5 (268.1059166)

Tyrosyl-Serine is a dipeptide composed of tyrosine and serine. 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.

Hydroxyprolyl-Histidine

2-{[hydroxy(4-hydroxypyrrolidin-2-yl)methylidene]amino}-3-(1H-imidazol-5-yl)propanoate

C11H16N4O4 (268.1171496)

Hydroxyprolyl-Histidine is a dipeptide composed of hydroxyproline and histidine. 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.

Histidylhydroxyproline

(2S,4R)-1-[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]-4-hydroxypyrrolidine-2-carboxylic acid

C11H16N4O4 (268.1171496)

Histidinylhydroxyproline is a dipeptide composed of histidine and hydroxyproline. 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.

Leucyl-Histidine

2-[(2-Amino-1-hydroxy-4-methylpentylidene)amino]-3-(1H-imidazol-5-yl)propanoate

C12H20N4O3 (268.15353300000004)

Leucyl-Histidine is a dipeptide composed of leucine and histidine. 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.

Hesperaline

[2-(3,4-dimethoxybenzoyloxy)ethyl]trimethylazanium

C14H22NO4+ (268.1548752)

Hesperaline is found in brassicas. Hesperaline is an alkaloid from seeds of damask violet (Hesperis matronalis Cruciferae

Eugenyl benzoate

Phenol, 2-methoxy-4-(2-propen-1-yl)-, 1-benzoate