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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2006-05-17 14:44:52 UTC
Update Date2022-09-22 17:45:12 UTC
HMDB IDHMDB0001913
Secondary Accession Numbers
  • HMDB01913
Metabolite Identification
Common NameOmeprazole
DescriptionOmeprazole is a highly effective inhibitor of gastric acid secretion used in the therapy of stomach ulcers, dyspepsia, peptic ulcer disease , gastroesophageal reflux disease and Zollinger-Ellison syndrome. The drug inhibits the H(+)-K(+)-ATPase (H(+)-K(+)-exchanging ATPase) in the proton pump of Gastric Parietal Cells.--Pubchem. Omeprazole is one of the most widely prescribed drugs internationally and is available over the counter in some countries.
Structure
Data?1582752216
Synonyms
ValueSource
PrilosecKegg
( -)-OmeprazoleHMDB
(-)-OmeprazoleHMDB
(S)-(-)-OmeprazoleHMDB
(S)-OmeprazoleHMDB
2,3,5-Trimethylpyridine/OmeprazoleHMDB
AntraHMDB
Antra mupsHMDB
AudazolHMDB
AulcerHMDB
BelmazolHMDB
CeprandalHMDB
DanloxHMDB
DemeprazolHMDB
DesecHMDB
DizprazolHMDB
DudencerHMDB
ElgamHMDB
EmeprotonHMDB
EpirazoleHMDB
ErbolinHMDB
EsomeprazoleHMDB
EsomperazoleHMDB
ExterHMDB
GasecHMDB
GastrimutHMDB
GastrolocHMDB
GibancerHMDB
IndurganHMDB
InhibitronHMDB
InhipumpHMDB
LensorHMDB
LogastricHMDB
LomacHMDB
LosecHMDB
MepralHMDB
MiolHMDB
MiracidHMDB
MopralHMDB
MoreconHMDB
NexiamHMDB
NexiumHMDB
Nexium IVHMDB
NilsecHMDB
NopraminHMDB
NuclosinaHMDB
OcidHMDB
OlexinHMDB
OmaprenHMDB
Omebeta 20HMDB
OmedHMDB
OmegastHMDB
OMEPHMDB
OmepradexHMDB
OmepralHMDB
OmeprazolHMDB
Omeprazole pelletsHMDB
OmeprazolumHMDB
OmeprazonHMDB
OmeprolHMDB
OmesekHMDB
OmezHMDB
OmezolHMDB
OmezolanHMDB
OmidHMDB
OmisecHMDB
OmizacHMDB
OmpanytHMDB
OMZHMDB
OrtanolHMDB
OsirenHMDB
OzokenHMDB
PaprazolHMDB
ParizacHMDB
PepticumHMDB
PepticusHMDB
PeptilcerHMDB
PrazentolHMDB
PrazidecHMDB
PrazolitHMDB
Prestwick_808HMDB
Prilosec otcHMDB
ProcelacHMDB
ProclorHMDB
PrysmaHMDB
RamezolHMDB
RegulacidHMDB
ResultHMDB
SanamidolHMDB
SecrepinaHMDB
Tedec ulceralHMDB
UlceralHMDB
UlcesepHMDB
UlcometionHMDB
UlcozolHMDB
UlcsepHMDB
UlsenHMDB
UltopHMDB
UlzolHMDB
VictrixHMDB
ZefxonHMDB
ZegeridHMDB
ZepralHMDB
ZimorHMDB
ZoltumHMDB
Magnesium, omeprazoleMeSH, HMDB
Omeprazole magnesiumMeSH, HMDB
Omeprazole sodiumMeSH, HMDB
Sodium, omeprazoleMeSH, HMDB
Chemical FormulaC17H19N3O3S
Average Molecular Weight345.416
Monoisotopic Molecular Weight345.114712179
IUPAC Name6-methoxy-2-[(4-methoxy-3,5-dimethylpyridin-2-yl)methanesulfinyl]-1H-1,3-benzodiazole
Traditional Nameomeprazole
CAS Registry Number73590-58-6
SMILES
COC1=CC2=C(C=C1)N=C(N2)S(=O)CC1=NC=C(C)C(OC)=C1C
InChI Identifier
InChI=1S/C17H19N3O3S/c1-10-8-18-15(11(2)16(10)23-4)9-24(21)17-19-13-6-5-12(22-3)7-14(13)20-17/h5-8H,9H2,1-4H3,(H,19,20)
InChI KeySUBDBMMJDZJVOS-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as sulfinylbenzimidazoles. These are polycyclic aromatic compounds containing a sulfinyl group attached at the position 2 of a benzimidazole moiety.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassBenzimidazoles
Sub ClassSulfinylbenzimidazoles
Direct ParentSulfinylbenzimidazoles
Alternative Parents
Substituents
  • Sulfinylbenzimidazole
  • Anisole
  • Alkyl aryl ether
  • Methylpyridine
  • Pyridine
  • Benzenoid
  • Azole
  • Imidazole
  • Heteroaromatic compound
  • Sulfoxide
  • Azacycle
  • Ether
  • Sulfinyl compound
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point156 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.5 mg/mLNot Available
LogP2.23SANGSTER (1994)
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.36 g/LALOGPS
logP1.66ALOGPS
logP2.43ChemAxon
logS-3ALOGPS
pKa (Strongest Acidic)9.29ChemAxon
pKa (Strongest Basic)4.77ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area77.1 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity93.66 m³·mol⁻¹ChemAxon
Polarizability37.45 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+180.89831661259
DarkChem[M-H]-181.49231661259
AllCCS[M+H]+180.74132859911
AllCCS[M-H]-182.64532859911
DeepCCS[M+H]+182.22630932474
DeepCCS[M-H]-179.86830932474
DeepCCS[M-2H]-213.9930932474
DeepCCS[M+Na]+189.21730932474
AllCCS[M+H]+180.732859911
AllCCS[M+H-H2O]+177.732859911
AllCCS[M+NH4]+183.632859911
AllCCS[M+Na]+184.432859911
AllCCS[M-H]-182.632859911
AllCCS[M+Na-2H]-182.432859911
AllCCS[M+HCOO]-182.332859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.5.18 minutes32390414
Predicted by Siyang on May 30, 20229.9791 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20221.42 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid1233.2 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid197.5 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid142.2 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid163.5 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid94.9 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid424.3 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 Acid379.4 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)675.7 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid715.0 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid168.9 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid823.9 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid199.4 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid300.6 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate477.2 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA167.3 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water90.9 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
OmeprazoleCOC1=CC2=C(C=C1)N=C(N2)S(=O)CC1=NC=C(C)C(OC)=C1C3958.2Standard polar33892256
OmeprazoleCOC1=CC2=C(C=C1)N=C(N2)S(=O)CC1=NC=C(C)C(OC)=C1C3152.4Standard non polar33892256
OmeprazoleCOC1=CC2=C(C=C1)N=C(N2)S(=O)CC1=NC=C(C)C(OC)=C1C3254.3Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Omeprazole,1TMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C)C2=C13109.7Semi standard non polar33892256
Omeprazole,1TMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C)C2=C12949.4Standard non polar33892256
Omeprazole,1TMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C)C2=C14035.5Standard polar33892256
Omeprazole,1TBDMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C(C)(C)C)C2=C13236.5Semi standard non polar33892256
Omeprazole,1TBDMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C(C)(C)C)C2=C13179.0Standard non polar33892256
Omeprazole,1TBDMS,isomer #1COC1=CC=C2N=C(S(=O)CC3=NC=C(C)C(OC)=C3C)N([Si](C)(C)C(C)(C)C)C2=C14006.4Standard polar33892256
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.34 (0.014-7.24) uMAdult (>18 years old)BothNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothAsthma details
Predicted Concentrations
BiospecimenValueOriginal ageOriginal sexOriginal conditionComments
Blood0.000 umol/mmol creatinineAdult (>18 years old)BothNormalPredicted based on drug qualities
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00338
Phenol Explorer Compound IDNot Available
FooDB IDFDB021863
KNApSAcK IDNot Available
Chemspider ID4433
KEGG Compound IDC07324
BioCyc IDNot Available
BiGG ID2299956
Wikipedia LinkOmeprazole
METLIN ID1632
PubChem Compound4594
PDB IDNot Available
ChEBI ID77260
Food Biomarker OntologyNot Available
VMH IDOMEPRAZOLE
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Download (PDF)
General ReferencesNot Available

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It performs a variety of oxidation reactions (e.g. caffeine 8-oxidation, omeprazole sulphoxidation, midazolam 1'-hydroxylation and midazolam 4-hydroxylation) of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Acts as a 1,8-cineole 2-exo-monooxygenase. The enzyme also hydroxylates etoposide.
Gene Name:
CYP3A4
Uniprot ID:
P08684
Molecular weight:
57255.585
General function:
Involved in monooxygenase activity
Specific function:
Responsible for the metabolism of a number of therapeutic agents such as the anticonvulsant drug S-mephenytoin, omeprazole, proguanil, certain barbiturates, diazepam, propranolol, citalopram and imipramine.
Gene Name:
CYP2C19
Uniprot ID:
P33261
Molecular weight:
55944.565
General function:
Involved in ATP binding
Specific function:
Catalyzes the hydrolysis of ATP coupled with the exchange of H(+) and K(+) ions across the plasma membrane. Responsible for acid production in the stomach.
Gene Name:
ATP4A
Uniprot ID:
P20648
Molecular weight:
114117.74
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Most active in catalyzing 2-hydroxylation. Caffeine is metabolized primarily by cytochrome CYP1A2 in the liver through an initial N3-demethylation. Also acts in the metabolism of aflatoxin B1 and acetaminophen. Participates in the bioactivation of carcinogenic aromatic and heterocyclic amines. Catalizes the N-hydroxylation of heterocyclic amines and the O-deethylation of phenacetin.
Gene Name:
CYP1A2
Uniprot ID:
P05177
Molecular weight:
58406.915