| Record Information |
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| Version | 5.0 |
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| Status | Detected and Quantified |
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| Creation Date | 2008-08-06 14:56:15 UTC |
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| Update Date | 2022-03-07 02:49:33 UTC |
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| HMDB ID | HMDB0006759 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | 3a-Hydroxy-5b-pregnane-20-one |
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| Description | 3alpha-Hydroxy-5beta-pregnane-20-one is an intermediate in C21-Steroid hormone metabolism. 3alpha-Hydroxy-5beta-pregnane-20-one is converted from 5beta-Pregnane-3,20-dione via the enzyme 3-alpha-hydroxysteroid dehydrogenase (EC 1.1.1.50). It is then converted to Pregnanediol via the enzyme 3alpha(or 20beta)-hydroxysteroid dehydrogenase (EC 1.1.1.53). |
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| Structure | [H][C@]12CCC3C4CC[C@H](C(C)=O)[C@@]4(C)CCC3[C@@]1(C)CC[C@@H](O)C2 InChI=1S/C21H34O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h14-19,23H,4-12H2,1-3H3/t14-,15-,16?,17-,18?,19?,20+,21-/m1/s1 |
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| Synonyms | | Value | Source |
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| 3alpha-Hydroxy-5beta-pregnane-20-one | HMDB |
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| Chemical Formula | C21H34O2 |
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| Average Molecular Weight | 318.4935 |
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| Monoisotopic Molecular Weight | 318.255880332 |
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| IUPAC Name | 1-[(2S,5R,7R,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadecan-14-yl]ethan-1-one |
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| Traditional Name | pregnanolone |
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| CAS Registry Number | Not Available |
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| SMILES | [H][C@]12CCC3C4CC[C@H](C(C)=O)[C@@]4(C)CCC3[C@@]1(C)CC[C@@H](O)C2 |
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| InChI Identifier | InChI=1S/C21H34O2/c1-13(22)17-6-7-18-16-5-4-14-12-15(23)8-10-20(14,2)19(16)9-11-21(17,18)3/h14-19,23H,4-12H2,1-3H3/t14-,15-,16?,17-,18?,19?,20+,21-/m1/s1 |
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| InChI Key | AURFZBICLPNKBZ-KCZNCWLVSA-N |
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| Chemical Taxonomy |
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| Description | Belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety. |
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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 | Pregnane steroids |
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| Direct Parent | Gluco/mineralocorticoids, progestogins and derivatives |
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| Alternative Parents | |
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| Substituents | - Progestogin-skeleton
- 20-oxosteroid
- 3-hydroxysteroid
- Hydroxysteroid
- 3-alpha-hydroxysteroid
- Oxosteroid
- Cyclic alcohol
- Ketone
- Secondary alcohol
- Organooxygen compound
- Hydrocarbon derivative
- Organic oxide
- Organic oxygen compound
- Carbonyl group
- Alcohol
- 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 | Not Available |
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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. Predicted by Afia on May 17, 2022. | 7.47 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 17.457 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.39 minutes | 32390414 | | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 2755.4 seconds | 40023050 | | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 444.8 seconds | 40023050 | | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 225.5 seconds | 40023050 | | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 194.4 seconds | 40023050 | | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 527.5 seconds | 40023050 | | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 719.8 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 | 706.8 seconds | 40023050 | | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 102.5 seconds | 40023050 | | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 1346.5 seconds | 40023050 | | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 495.6 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 | 1610.9 seconds | 40023050 | | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 419.8 seconds | 40023050 | | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 466.4 seconds | 40023050 | | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 263.7 seconds | 40023050 | | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 443.5 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 | 12.6 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedDerivatized| Derivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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| 3a-Hydroxy-5b-pregnane-20-one,1TMS,isomer #1 | CC(=O)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 2742.2 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,1TMS,isomer #2 | CC(O[Si](C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O)CC[C@]4(C)C3CC[C@]12C | 2764.7 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,1TMS,isomer #3 | C=C(O[Si](C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O)CC[C@]4(C)C3CC[C@@]21C | 2743.4 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@]12C | 2754.3 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@]12C | 2748.8 | Standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@]12C | 3115.8 | Standard polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 2718.9 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 2736.5 | Standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 3208.2 | Standard polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,1TBDMS,isomer #1 | CC(=O)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 2989.8 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,1TBDMS,isomer #2 | CC(O[Si](C)(C)C(C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O)CC[C@]4(C)C3CC[C@]12C | 3021.5 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,1TBDMS,isomer #3 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O)CC[C@]4(C)C3CC[C@@]21C | 3010.0 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@]12C | 3226.2 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@]12C | 3256.6 | Standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@]12C | 3358.5 | Standard polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 3211.9 | Semi standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 3240.8 | Standard non polar | 33892256 | | 3a-Hydroxy-5b-pregnane-20-one,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CCC2C3CC[C@@H]4C[C@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)C3CC[C@@]21C | 3424.0 | Standard 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 - 3a-Hydroxy-5b-pregnane-20-one GC-MS (Non-derivatized) - 70eV, Positive | splash10-11du-0292000000-d5c96280786507060adf | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one GC-MS (1 TMS) - 70eV, Positive | splash10-01t9-1109000000-2c47b5bb98f082161201 | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 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 - 3a-Hydroxy-5b-pregnane-20-one 10V, Positive-QTOF | splash10-0uxr-0019000000-82b5328b4643c0421b0d | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 20V, Positive-QTOF | splash10-0uxr-1496000000-6fd25d5861771fb104b7 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 40V, Positive-QTOF | splash10-002o-2490000000-ba6e2bc4d584ea3d3a4b | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 10V, Negative-QTOF | splash10-014i-0029000000-826f869c8c8e3739b52e | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 20V, Negative-QTOF | splash10-014i-0059000000-699658e7c96cdaee62e8 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 40V, Negative-QTOF | splash10-0zmr-1092000000-9cb4a247b808ab6f5c27 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 10V, Negative-QTOF | splash10-014i-0009000000-bbaa566ea695ae62f84e | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 20V, Negative-QTOF | splash10-014i-0019000000-b27ed891ac6811eab39d | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 40V, Negative-QTOF | splash10-014i-0039000000-ee44f8ffc9f4d431f1b9 | 2021-09-23 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 10V, Positive-QTOF | splash10-0uxr-0039000000-5b11ff3658bc22f27d0a | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 20V, Positive-QTOF | splash10-0j6v-0984000000-16637ba86fccb8e48e17 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 3a-Hydroxy-5b-pregnane-20-one 40V, Positive-QTOF | splash10-0a4m-6950000000-17eb447f04784923dcfe | 2021-09-24 | Wishart Lab | View Spectrum |
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