Record Information |
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Version | 5.0 |
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Status | Detected but not Quantified |
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Creation Date | 2005-11-16 15:48:42 UTC |
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Update Date | 2022-03-07 02:49:00 UTC |
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HMDB ID | HMDB0000347 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | 16b-Hydroxyestradiol |
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Description | 16b-Hydroxyestradiol, which is better known as epiestriol (or 16beta-epiestriol or 16beta-hydroxy-17beta-estriol), belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. Thus, epiestriol is considered to be a steroid molecule. Formally 16b-hydroxyestradiol is a 3-hydroxy steroid that is 17beta-estradiol substituted by a beta-hydroxy group at position 16. In other words, it has hydroxyl groups at the C3, 16-beta, and 17-beta positions. It is an oxidative metabolite of 17beta-estradiol (PMID: 12865317 ). Epiestriol is found in all vertebrates. Epiestriol is a minor and weak endogenous estrogen. It is the 16beta-epimer of estriol (which is 16alpha-hydroxy-17beta-estradiol). Epiestriol has been used clinically in the treatment of acne. In addition to its estrogenic actions, epiestriol has been found to possess significant anti-inflammatory properties without glycogenic activity or immunosuppressive effects (PMID: 9120824 ). |
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Structure | [H][C@@]12C[C@H](O)[C@H](O)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(O)C=C3 InChI=1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16+,17+,18+/m1/s1 |
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Synonyms | Value | Source |
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16-Epiestriol | ChEBI | 16beta,17beta-Estriol | ChEBI | Actriol | ChEBI | Epiestriol | ChEBI | Epiestriolum | ChEBI | Epioestriolum | ChEBI | Estra-1,3,5(10)-triene-3,16beta,17-triol | ChEBI | Estra-1,3,5(10)-triene-3,16beta,17beta-triol | ChEBI | 16b,17b-Estriol | Generator | 16Β,17β-estriol | Generator | Estra-1,3,5(10)-triene-3,16b,17-triol | Generator | Estra-1,3,5(10)-triene-3,16β,17-triol | Generator | Estra-1,3,5(10)-triene-3,16b,17b-triol | Generator | Estra-1,3,5(10)-triene-3,16β,17β-triol | Generator | 16beta-Hydroxy-17beta-estradiol | HMDB | 16b-Hydroxy-17b-estradiol | HMDB | 16Β-hydroxy-17β-estradiol | HMDB | 16-Epi-estriol | HMDB | 16-Epiestratriol | HMDB | (16alpha,17beta)-Estra-1,3,5(10)-triene-3,16,17-triol | HMDB | (16beta,17beta)-Estra-1,3,5(10)-triene-3,16,17-triol | HMDB | 16 alpha Hydroxy estradiol | HMDB | 16-alpha-Hydroxy-estradiol | HMDB | 16alpha,17beta Estriol | HMDB | 16alpha,17beta-Estriol | HMDB | 16beta Hydroxy estradiol | HMDB | 16beta-Hydroxy-estradiol | HMDB | Estriol | HMDB | Ovestin | HMDB | 16Β-hydroxyestradiol | HMDB | 16b-Hydroxyestradiol | Generator |
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Chemical Formula | C18H24O3 |
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Average Molecular Weight | 288.3814 |
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Monoisotopic Molecular Weight | 288.172544634 |
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IUPAC Name | (1S,10R,11S,13S,14R,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-triene-5,13,14-triol |
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Traditional Name | (1S,10R,11S,13S,14R,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-triene-5,13,14-triol |
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CAS Registry Number | 547-81-9 |
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SMILES | [H][C@@]12C[C@H](O)[C@H](O)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(O)C=C3 |
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InChI Identifier | InChI=1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16+,17+,18+/m1/s1 |
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InChI Key | PROQIPRRNZUXQM-ZMSHIADSSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. |
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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 | Estrane steroids |
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Direct Parent | Estrogens and derivatives |
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Alternative Parents | |
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Substituents | - Estrogen-skeleton
- 3-hydroxysteroid
- 17-hydroxysteroid
- 16-hydroxysteroid
- 16-beta-hydroxysteroid
- Hydroxysteroid
- Phenanthrene
- Tetralin
- 1-hydroxy-2-unsubstituted benzenoid
- Benzenoid
- Cyclic alcohol
- Secondary alcohol
- 1,2-diol
- Polyol
- Organooxygen compound
- Hydrocarbon derivative
- Alcohol
- Organic oxygen compound
- Aromatic homopolycyclic compound
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Molecular Framework | Aromatic homopolycyclic compounds |
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External Descriptors | |
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Ontology |
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Not Available | Not Available |
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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 | Experimental Collision Cross Sections |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatizedDerivatizedDerivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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16b-Hydroxyestradiol,1TMS,isomer #1 | C[C@]12CC[C@@H]3C4=CC=C(O)C=C4CC[C@H]3[C@@H]1C[C@H](O[Si](C)(C)C)[C@@H]2O | 2789.2 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,1TMS,isomer #2 | C[C@]12CC[C@@H]3C4=CC=C(O)C=C4CC[C@H]3[C@@H]1C[C@H](O)[C@@H]2O[Si](C)(C)C | 2794.1 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,1TMS,isomer #3 | C[C@]12CC[C@@H]3C4=CC=C(O[Si](C)(C)C)C=C4CC[C@H]3[C@@H]1C[C@H](O)[C@@H]2O | 2771.9 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TMS,isomer #1 | C[C@]12CC[C@@H]3C4=CC=C(O[Si](C)(C)C)C=C4CC[C@H]3[C@@H]1C[C@H](O[Si](C)(C)C)[C@@H]2O | 2842.9 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TMS,isomer #2 | C[C@]12CC[C@@H]3C4=CC=C(O)C=C4CC[C@H]3[C@@H]1C[C@H](O[Si](C)(C)C)[C@@H]2O[Si](C)(C)C | 2782.1 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TMS,isomer #3 | C[C@]12CC[C@@H]3C4=CC=C(O[Si](C)(C)C)C=C4CC[C@H]3[C@@H]1C[C@H](O)[C@@H]2O[Si](C)(C)C | 2842.9 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,3TMS,isomer #1 | C[C@]12CC[C@@H]3C4=CC=C(O[Si](C)(C)C)C=C4CC[C@H]3[C@@H]1C[C@H](O[Si](C)(C)C)[C@@H]2O[Si](C)(C)C | 2907.4 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)O[C@H]1C[C@H]2[C@@H]3CCC4=CC(O)=CC=C4[C@H]3CC[C@]2(C)[C@H]1O | 3065.1 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,1TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)O[C@H]1[C@@H](O)C[C@H]2[C@@H]3CCC4=CC(O)=CC=C4[C@H]3CC[C@@]21C | 3081.3 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,1TBDMS,isomer #3 | CC(C)(C)[Si](C)(C)OC1=CC=C2C(=C1)CC[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1C[C@H](O)[C@@H]2O | 3084.3 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC1=CC=C2C(=C1)CC[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1C[C@H](O[Si](C)(C)C(C)(C)C)[C@@H]2O | 3374.5 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)O[C@H]1C[C@H]2[C@@H]3CCC4=CC(O)=CC=C4[C@H]3CC[C@]2(C)[C@H]1O[Si](C)(C)C(C)(C)C | 3303.1 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,2TBDMS,isomer #3 | CC(C)(C)[Si](C)(C)OC1=CC=C2C(=C1)CC[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1C[C@H](O)[C@@H]2O[Si](C)(C)C(C)(C)C | 3391.4 | Semi standard non polar | 33892256 | 16b-Hydroxyestradiol,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)OC1=CC=C2C(=C1)CC[C@@H]1[C@@H]2CC[C@@]2(C)[C@H]1C[C@H](O[Si](C)(C)C(C)(C)C)[C@@H]2O[Si](C)(C)C(C)(C)C | 3664.8 | Semi standard non polar | 33892256 |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (Non-derivatized) - 70eV, Positive | splash10-0ab9-1590000000-cf2f42c37e3436edbcfa | 2017-09-01 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (3 TMS) - 70eV, Positive | splash10-009i-2033900000-46c301a46b654b6c6bf3 | 2017-10-06 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (Non-derivatized) - 70eV, Positive | Not Available | 2021-10-12 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_1_3) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_2_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TMS_2_3) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_1_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_1_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_1_3) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_2_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_2_2) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_2_3) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - 16b-Hydroxyestradiol GC-MS (TBDMS_3_1) - 70eV, Positive | Not Available | 2021-11-05 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Experimental LC-MS/MS | LC-MS/MS Spectrum - 16b-Hydroxyestradiol Quattro_QQQ 10V, Positive-QTOF (Annotated) | splash10-000i-0290000000-c1aaa2c05e9fd0323ef6 | 2012-07-24 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - 16b-Hydroxyestradiol Quattro_QQQ 25V, Positive-QTOF (Annotated) | splash10-0a4i-2900000000-3b5302633684d0176de2 | 2012-07-24 | HMDB team, MONA | View Spectrum | Experimental LC-MS/MS | LC-MS/MS Spectrum - 16b-Hydroxyestradiol Quattro_QQQ 40V, Positive-QTOF (Annotated) | splash10-0a4i-7900000000-1705b9f7f2b39ae9ba41 | 2012-07-24 | HMDB team, MONA | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 10V, Positive-QTOF | splash10-000i-0090000000-11e0a31c4649eeadffb4 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 20V, Positive-QTOF | splash10-0fki-0490000000-4179a69250f74019b4f8 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 40V, Positive-QTOF | splash10-0fvi-4970000000-09555c37e0926cc7a845 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 10V, Negative-QTOF | splash10-000i-0090000000-78e3342aed99bfff3970 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 20V, Negative-QTOF | splash10-000i-0090000000-66743ac1a583b78756a7 | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 40V, Negative-QTOF | splash10-062l-0090000000-a38189a9216fbf580f8c | 2017-09-01 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 10V, Negative-QTOF | splash10-000i-0090000000-843a74fabb1d0eb512a1 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 20V, Negative-QTOF | splash10-00kr-0090000000-4e0854fb8be9cf34de97 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 40V, Negative-QTOF | splash10-02br-0090000000-70686fa9219ae093945a | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 10V, Positive-QTOF | splash10-000i-0090000000-1126a56061a8c854c755 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 20V, Positive-QTOF | splash10-0fga-0790000000-a1dba0b6195890b30d91 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - 16b-Hydroxyestradiol 40V, Positive-QTOF | splash10-0a6v-3910000000-64d9abb8f215c1264e1f | 2021-09-25 | Wishart Lab | View Spectrum |
NMR SpectraSpectrum Type | Description | Deposition Date | Source | View |
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Experimental 2D NMR | [1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, 100%_DMSO, experimental) | 2012-12-05 | Wishart Lab | View Spectrum |
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General References | - Lee AJ, Cai MX, Thomas PE, Conney AH, Zhu BT: Characterization of the oxidative metabolites of 17beta-estradiol and estrone formed by 15 selectively expressed human cytochrome p450 isoforms. Endocrinology. 2003 Aug;144(8):3382-98. [PubMed:12865317 ]
- Xu X, Veenstra TD, Fox SD, Roman JM, Issaq HJ, Falk R, Saavedra JE, Keefer LK, Ziegler RG: Measuring fifteen endogenous estrogens simultaneously in human urine by high-performance liquid chromatography-mass spectrometry. Anal Chem. 2005 Oct 15;77(20):6646-54. [PubMed:16223252 ]
- Nambara T, Matsuki Y, Igarashi J, Kawarada Y, Kurata M: Studies on steroid conjugates. XII. Occurrence of 16-epiestriol 16-glucuronide in human pregnancy urine. Chem Pharm Bull (Tokyo). 1974 Oct;22(10):2242-5. [PubMed:4377544 ]
- Adlercreutz H, Martin F, Pulkkinen M, Dencker H, Rimer U, Sjoberg NO, Tikkanen MJ: Intestinal metabolism of estrogens. J Clin Endocrinol Metab. 1976 Sep;43(3):497-505. [PubMed:956337 ]
- Latman NS, Kishore V, Bruot BC: 16-epiestriol: an anti-inflammatory steroid without glycogenic activity. J Pharm Sci. 1994 Jun;83(6):874-7. doi: 10.1002/jps.2600830623. [PubMed:9120824 ]
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