| Record Information |
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| Version | 5.0 |
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| Status | Expected but not Quantified |
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| Creation Date | 2008-08-06 15:56:24 UTC |
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| Update Date | 2022-03-07 02:49:33 UTC |
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| HMDB ID | HMDB0006764 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 17a,20a-Dihydroxycholesterol |
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| Description | 17alpha,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). |
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| Structure | [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=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 |
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| Synonyms | | Value | Source |
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| 17alpha,20alpha-Dihydroxycholesterol | HMDB |
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| Chemical Formula | C27H46O3 |
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| Average Molecular Weight | 418.6523 |
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| Monoisotopic Molecular Weight | 418.344695338 |
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| 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 |
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| 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 |
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| CAS Registry Number | Not Available |
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| 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 |
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| 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 |
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| InChI Key | PRZXKPDANWDCNC-IMVKCWHASA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as cholesterols and derivatives. Cholesterols and derivatives are compounds containing a 3-hydroxylated cholestane core. |
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| Kingdom | Organic compounds |
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| Super Class | Lipids and lipid-like molecules |
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| Class | Steroids and steroid derivatives |
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| Sub Class | Cholestane steroids |
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| Direct Parent | Cholesterols and derivatives |
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| Alternative Parents | |
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| 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
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| Molecular Framework | Aliphatic homopolycyclic compounds |
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| External Descriptors | Not Available |
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| Ontology |
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| Physiological effect | |
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| Disposition | |
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| Process | |
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| Role | |
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| Physical Properties |
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| State | Solid |
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| Experimental Molecular Properties | | Property | Value | Reference |
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| Melting Point | Not Available | Not Available | | Boiling Point | Not Available | Not Available | | Water Solubility | Not Available | Not Available | | LogP | Not Available | Not Available |
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| Experimental Chromatographic Properties | Not Available |
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| Predicted Molecular Properties | |
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| Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times Underivatized| Chromatographic Method | Retention Time | Reference |
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| 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 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 20.4531 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.4 minutes | 32390414 | | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 46.9 seconds | 40023050 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 3348.7 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 405.5 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 255.8 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 186.4 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 536.3 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 1146.8 seconds | 40023050 | | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 941.9 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 94.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1700.2 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 600.5 seconds | 40023050 | | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 1933.6 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 649.2 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 527.0 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 250.5 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 605.7 seconds | 40023050 | | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 8.5 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| 17a,20a-Dihydroxycholesterol,1TMS,isomer #1 | CC(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@@]21C | 3449.1 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,1TMS,isomer #2 | CC(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@@]21C | 3416.2 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,1TMS,isomer #3 | CC(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@@]21C | 3449.9 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TMS,isomer #1 | CC(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@@]21C | 3479.9 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TMS,isomer #2 | CC(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@@]21C | 3436.4 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TMS,isomer #3 | CC(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@@]21C | 3430.7 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,3TMS,isomer #1 | CC(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@@]21C | 3460.0 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,1TBDMS,isomer #1 | CC(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@@]21C | 3696.9 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,1TBDMS,isomer #2 | CC(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@@]21C | 3679.0 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,1TBDMS,isomer #3 | CC(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@@]21C | 3698.0 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TBDMS,isomer #1 | CC(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@@]21C | 3976.5 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TBDMS,isomer #2 | CC(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@@]21C | 3909.1 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,2TBDMS,isomer #3 | CC(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@@]21C | 3913.5 | Semi standard non polar | 33892256 | | 17a,20a-Dihydroxycholesterol,3TBDMS,isomer #1 | CC(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@@]21C | 4165.8 | Semi standard non polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted GC-MS | Predicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, Positive | splash10-0uel-2239400000-41515f4297af4971a848 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (3 TMS) - 70eV, Positive | splash10-00xr-2011249000-a657d6ae561e24b74e38 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 17a,20a-Dihydroxycholesterol GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum |
MS/MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Positive-QTOF | splash10-0uxr-0003900000-f535ba20543aafa8bd7e | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Positive-QTOF | splash10-0fl9-9048500000-57767148817dd16563d3 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Positive-QTOF | splash10-0avi-9125000000-7949d9d82d4f9d3b2002 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Negative-QTOF | splash10-014i-0002900000-95b5f04d6c6ec228cfaf | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Negative-QTOF | splash10-014s-2485900000-cd3f9e369ac3a24ebfe1 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Negative-QTOF | splash10-0079-1194100000-2d013ecd999936b89e11 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Positive-QTOF | splash10-0159-1115900000-d5e9dc6e8588fe35bcb9 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Positive-QTOF | splash10-0901-7931100000-a6fdc1b6f1d0238eb768 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Positive-QTOF | splash10-0006-9720000000-8e7c40e57518c7456eda | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 10V, Negative-QTOF | splash10-014i-0000900000-f2cb6399034352e924c8 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 20V, Negative-QTOF | splash10-014i-0030900000-99cff478edd24aa7f163 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 17a,20a-Dihydroxycholesterol 40V, Negative-QTOF | splash10-07vr-4692300000-68c60377630672ef5050 | 2021-09-24 | Wishart Lab | View Spectrum |
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