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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 12:30:58 UTC
Update Date2022-11-23 22:13:43 UTC
HMDB IDHMDB0253701
Secondary Accession NumbersNone
Metabolite Identification
Common NameIsotocin
DescriptionIsotocin belongs to the class of organic compounds known as oligopeptides. These are organic compounds containing a sequence of between three and ten alpha-amino acids joined by peptide bonds. Based on a literature review a significant number of articles have been published on Isotocin. This compound has been identified in human blood as reported by (PMID: 31557052 ). Isotocin is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Isotocin is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
4-Serine-8-isoleucine-oxytocinHMDB
4-Ser-8-ile-oxytocinHMDB
Chemical FormulaC41H63N11O12S2
Average Molecular Weight966.14
Monoisotopic Molecular Weight965.409908861
IUPAC Name2-({1-[19-amino-13-(butan-2-yl)-7-(carbamoylmethyl)-10-(hydroxymethyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl]pyrrolidin-2-yl}formamido)-N-(carbamoylmethyl)-3-methylpentanamide
Traditional Name2-({1-[19-amino-7-(carbamoylmethyl)-10-(hydroxymethyl)-16-[(4-hydroxyphenyl)methyl]-6,9,12,15,18-pentaoxo-13-(sec-butyl)-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl]pyrrolidin-2-yl}formamido)-N-(carbamoylmethyl)-3-methylpentanamide
CAS Registry NumberNot Available
SMILES
CCC(C)C(NC(=O)C1CCCN1C(=O)C1CSSCC(N)C(=O)NC(CC2=CC=C(O)C=C2)C(=O)NC(C(C)CC)C(=O)NC(CO)C(=O)NC(CC(N)=O)C(=O)N1)C(=O)NCC(N)=O
InChI Identifier
InChI=1S/C41H63N11O12S2/c1-5-20(3)32(39(62)45-16-31(44)56)51-38(61)29-8-7-13-52(29)41(64)28-19-66-65-18-24(42)34(57)46-25(14-22-9-11-23(54)12-10-22)36(59)50-33(21(4)6-2)40(63)48-27(17-53)37(60)47-26(15-30(43)55)35(58)49-28/h9-12,20-21,24-29,32-33,53-54H,5-8,13-19,42H2,1-4H3,(H2,43,55)(H2,44,56)(H,45,62)(H,46,57)(H,47,60)(H,48,63)(H,49,58)(H,50,59)(H,51,61)
InChI KeyXMINXPSYULINQV-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as oligopeptides. These are organic compounds containing a sequence of between three and ten alpha-amino acids joined by peptide bonds.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentOligopeptides
Alternative Parents
Substituents
  • Alpha-oligopeptide
  • Cyclic alpha peptide
  • Isoleucine or derivatives
  • Macrolactam
  • Proline or derivatives
  • N-acyl-alpha amino acid or derivatives
  • Alpha-amino acid amide
  • N-substituted-alpha-amino acid
  • Alpha-amino acid or derivatives
  • N-acylpyrrolidine
  • Pyrrolidine carboxylic acid or derivatives
  • Pyrrolidine-2-carboxamide
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Fatty acyl
  • Benzenoid
  • Monocyclic benzene moiety
  • Fatty amide
  • N-acyl-amine
  • Pyrrolidine
  • Tertiary carboxylic acid amide
  • Secondary carboxylic acid amide
  • Primary carboxylic acid amide
  • Amino acid or derivatives
  • Carboxamide group
  • Organic disulfide
  • Lactam
  • Organoheterocyclic compound
  • Azacycle
  • Primary amine
  • Organic oxide
  • Primary aliphatic amine
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organonitrogen compound
  • Carbonyl group
  • Organooxygen compound
  • Organic nitrogen compound
  • Amine
  • Organic oxygen compound
  • Alcohol
  • Primary alcohol
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP-0.72ALOGPS
logP-4.8ChemAxon
logS-4ALOGPS
pKa (Strongest Acidic)9.5ChemAxon
pKa (Strongest Basic)7.65ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count13ChemAxon
Hydrogen Donor Count12ChemAxon
Polar Surface Area376.67 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity240.97 m³·mol⁻¹ChemAxon
Polarizability97.16 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+290.82330932474
DeepCCS[M-H]-288.71230932474
DeepCCS[M-2H]-322.60930932474
DeepCCS[M+Na]+296.80830932474
AllCCS[M+H]+297.932859911
AllCCS[M+H-H2O]+298.432859911
AllCCS[M+NH4]+297.332859911
AllCCS[M+Na]+297.132859911
AllCCS[M-H]-280.232859911
AllCCS[M+Na-2H]-285.332859911
AllCCS[M+HCOO]-290.932859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Predicted by Siyang on May 30, 202214.5177 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20226.46 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid2728.5 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid134.4 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid199.7 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid155.5 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid132.9 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid399.7 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid480.2 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)1186.5 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1032.2 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid557.4 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1663.4 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid324.8 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid341.2 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate281.7 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA691.1 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water103.1 seconds40023050

Predicted Kovats Retention Indices

Not Available
Spectra

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 10V, Positive-QTOFsplash10-016r-3000000879-4d404a8c4ebe0cb77bf12021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 20V, Positive-QTOFsplash10-08i1-5200000390-8e975a7afd783b2a1c9f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 40V, Positive-QTOFsplash10-01pc-9400000110-90219718d9c8a86bd3912021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 10V, Negative-QTOFsplash10-03di-1001000459-8c334a0cd8905486ea932021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 20V, Negative-QTOFsplash10-01ox-9000000274-e9304fad0e0a2501409b2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Isotocin 40V, Negative-QTOFsplash10-052f-9300015231-04b788f377591fcfbf5a2021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID2524261
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound3274949
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]