Hmdb loader
Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2008-08-06 15:56:24 UTC
Update Date2022-03-07 02:49:33 UTC
HMDB IDHMDB0006764
Secondary Accession Numbers
  • HMDB06764
Metabolite Identification
Common Name17a,20a-Dihydroxycholesterol
Description17alpha,20alpha-Dihydroxycholesterol is an intermediate in C21-Steroid hormone metabolism. 17alpha,20alpha-Dihydroxycholesterol is the 8th to last step in the synthesis of Cortolone and is converted from 20alpha-Hydroxycholesterol via the enzyme cytochrome P450 (EC 1.14.99.9). It is then converted to 17alpha-Hydroxypregnenolone via the enzyme cytochrome P450 (EC1.14.15.6).
Structure
Data?1582752404
Synonyms
ValueSource
17alpha,20alpha-DihydroxycholesterolHMDB
Chemical FormulaC27H46O3
Average Molecular Weight418.6523
Monoisotopic Molecular Weight418.344695338
IUPAC Name(2R,5S,10R,14R,15S)-14-[(2R)-2-hydroxy-6-methylheptan-2-yl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,14-diol
Traditional Name(2R,5S,10R,14R,15S)-14-[(2R)-2-hydroxy-6-methylheptan-2-yl]-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadec-7-ene-5,14-diol
CAS Registry NumberNot Available
SMILES
[H]C12CC[C@](O)([C@](C)(O)CCCC(C)C)[C@@]1(C)CCC1([H])[C@@]2([H])CC=C2C[C@@H](O)CC[C@]12C
InChI Identifier
InChI=1S/C27H46O3/c1-18(2)7-6-13-26(5,29)27(30)16-12-23-21-9-8-19-17-20(28)10-14-24(19,3)22(21)11-15-25(23,27)4/h8,18,20-23,28-30H,6-7,9-17H2,1-5H3/t20-,21+,22?,23?,24-,25-,26+,27+/m0/s1
InChI KeyPRZXKPDANWDCNC-IMVKCWHASA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as cholesterols and derivatives. Cholesterols and derivatives are compounds containing a 3-hydroxylated cholestane core.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassCholestane steroids
Direct ParentCholesterols and derivatives
Alternative Parents
Substituents
  • Cholesterol
  • Cholesterol-skeleton
  • 20-hydroxysteroid
  • 3-hydroxy-delta-5-steroid
  • 3-hydroxysteroid
  • 17-hydroxysteroid
  • Hydroxysteroid
  • 3-beta-hydroxy-delta-5-steroid
  • 3-beta-hydroxysteroid
  • Delta-5-steroid
  • Cyclic alcohol
  • Tertiary alcohol
  • Secondary alcohol
  • Alcohol
  • Organooxygen compound
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect
Disposition
Process
Role
Physical Properties
StateSolid
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
Water Solubility0.0054 g/LALOGPS
logP5.05ALOGPS
logP4.87ChemAxon
logS-4.9ALOGPS
pKa (Strongest Acidic)13.25ChemAxon
pKa (Strongest Basic)-1.4ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area60.69 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity123.6 m³·mol⁻¹ChemAxon
Polarizability50.5 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+202.76331661259
DarkChem[M-H]-198.91231661259
DeepCCS[M-2H]-235.00630932474
DeepCCS[M+Na]+210.96630932474
AllCCS[M+H]+207.532859911
AllCCS[M+H-H2O]+205.632859911
AllCCS[M+NH4]+209.332859911
AllCCS[M+Na]+209.832859911
AllCCS[M-H]-205.532859911
AllCCS[M+Na-2H]-207.632859911
AllCCS[M+HCOO]-210.032859911

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. 8.19 minutes32390414
Predicted by Siyang on May 30, 202220.4531 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20222.4 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid46.9 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid3348.7 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid405.5 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid255.8 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid186.4 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid536.3 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid1146.8 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 Acid941.9 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)94.5 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid1700.2 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid600.5 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1933.6 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid649.2 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid527.0 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate250.5 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA605.7 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water8.5 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
17a,20a-Dihydroxycholesterol[H]C12CC[C@](O)([C@](C)(O)CCCC(C)C)[C@@]1(C)CCC1([H])[C@@]2([H])CC=C2C[C@@H](O)CC[C@]12C2792.2Standard polar33892256
17a,20a-Dihydroxycholesterol[H]C12CC[C@](O)([C@](C)(O)CCCC(C)C)[C@@]1(C)CCC1([H])[C@@]2([H])CC=C2C[C@@H](O)CC[C@]12C3374.6Standard non polar33892256
17a,20a-Dihydroxycholesterol[H]C12CC[C@](O)([C@](C)(O)CCCC(C)C)[C@@]1(C)CCC1([H])[C@@]2([H])CC=C2C[C@@H](O)CC[C@]12C3424.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
17a,20a-Dihydroxycholesterol,1TMS,isomer #1CC(C)CCC[C@@](C)(O)[C@@]1(O[Si](C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3449.1Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,1TMS,isomer #2CC(C)CCC[C@@](C)(O[Si](C)(C)C)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3416.2Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,1TMS,isomer #3CC(C)CCC[C@@](C)(O)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C3449.9Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TMS,isomer #1CC(C)CCC[C@@](C)(O[Si](C)(C)C)[C@@]1(O[Si](C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3479.9Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TMS,isomer #2CC(C)CCC[C@@](C)(O)[C@@]1(O[Si](C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C3436.4Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TMS,isomer #3CC(C)CCC[C@@](C)(O[Si](C)(C)C)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C3430.7Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,3TMS,isomer #1CC(C)CCC[C@@](C)(O[Si](C)(C)C)[C@@]1(O[Si](C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C3460.0Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,1TBDMS,isomer #1CC(C)CCC[C@@](C)(O)[C@@]1(O[Si](C)(C)C(C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3696.9Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,1TBDMS,isomer #2CC(C)CCC[C@@](C)(O[Si](C)(C)C(C)(C)C)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3679.0Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,1TBDMS,isomer #3CC(C)CCC[C@@](C)(O)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C3698.0Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TBDMS,isomer #1CC(C)CCC[C@@](C)(O[Si](C)(C)C(C)(C)C)[C@@]1(O[Si](C)(C)C(C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)C3CC[C@@]21C3976.5Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TBDMS,isomer #2CC(C)CCC[C@@](C)(O)[C@@]1(O[Si](C)(C)C(C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C3909.1Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,2TBDMS,isomer #3CC(C)CCC[C@@](C)(O[Si](C)(C)C(C)(C)C)[C@@]1(O)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C3913.5Semi standard non polar33892256
17a,20a-Dihydroxycholesterol,3TBDMS,isomer #1CC(C)CCC[C@@](C)(O[Si](C)(C)C(C)(C)C)[C@@]1(O[Si](C)(C)C(C)(C)C)CCC2[C@@H]3CC=C4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C4165.8Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, Positivesplash10-0uel-2239400000-41515f4297af4971a8482017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (3 TMS) - 70eV, Positivesplash10-00xr-2011249000-a657d6ae561e24b74e382017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Positive-QTOFsplash10-0uxr-0003900000-f535ba20543aafa8bd7e2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Positive-QTOFsplash10-0fl9-9048500000-57767148817dd16563d32017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Positive-QTOFsplash10-0avi-9125000000-7949d9d82d4f9d3b20022017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Negative-QTOFsplash10-014i-0002900000-95b5f04d6c6ec228cfaf2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Negative-QTOFsplash10-014s-2485900000-cd3f9e369ac3a24ebfe12017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Negative-QTOFsplash10-0079-1194100000-2d013ecd999936b89e112017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Positive-QTOFsplash10-0159-1115900000-d5e9dc6e8588fe35bcb92021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Positive-QTOFsplash10-0901-7931100000-a6fdc1b6f1d0238eb7682021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Positive-QTOFsplash10-0006-9720000000-8e7c40e57518c7456eda2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Negative-QTOFsplash10-014i-0000900000-f2cb6399034352e924c82021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Negative-QTOFsplash10-014i-0030900000-99cff478edd24aa7f1632021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Negative-QTOFsplash10-07vr-4692300000-68c60377630672ef50502021-09-24Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB024067
KNApSAcK IDNot Available
Chemspider ID167253
KEGG Compound IDC05487
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound53477898
PDB IDNot Available
ChEBI ID27832
Food Biomarker OntologyNot Available
VMH IDM00406
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Catalyzes the side-chain cleavage reaction of cholesterol to pregnenolone.
Gene Name:
CYP11A1
Uniprot ID:
P05108
Molecular weight:
60101.87
Reactions
17a,20a-Dihydroxycholesterol + Oxygen + Hydrogen Ion + Reduced adrenal ferredoxin → 17a-Hydroxypregnenolone + 4-Methylpentanal + Water + Oxidized adrenal ferredoxindetails
General function:
Involved in monooxygenase activity
Specific function:
Conversion of pregnenolone and progesterone to their 17-alpha-hydroxylated products and subsequently to dehydroepiandrosterone (DHEA) and androstenedione. Catalyzes both the 17-alpha-hydroxylation and the 17,20-lyase reaction. Involved in sexual development during fetal life and at puberty.
Gene Name:
CYP17A1
Uniprot ID:
P05093
Molecular weight:
57369.995
Reactions
20alpha-Hydroxycholesterol + NADPH + Hydrogen Ion + Oxygen → 17a,20a-Dihydroxycholesterol + NADP + Waterdetails