| Record Information |
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| Version | 5.0 |
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| Status | Detected and Quantified |
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| Creation Date | 2006-08-16 15:25:22 UTC |
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| Update Date | 2022-03-07 02:49:10 UTC |
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| HMDB ID | HMDB0001471 |
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| Secondary Accession Numbers | |
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| Metabolite Identification |
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| Common Name | Epipregnanolone |
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| Description | Epipregnanolone, also known as 3beta-hydroxy-5beta-pregnan-20-one, belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogens, and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety. Thus, epipregnanolone is considered to be a steroid lipid molecule. Epipregnanolone is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Epipregnanolone is a pregnane found in the urine of pregnant women and sows. It has anesthetic, hypnotic, and sedative properties. It is a substrate of the enzyme 3beta-hydroxy-5beta-steroid dehydrogenase (EC 1.1.1.277). |
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| Structure | [H][C@@]1(CC[C@@]2([H])[C@]3([H])CC[C@]4([H])C[C@@H](O)CC[C@]4(C)[C@@]3([H])CC[C@]12C)C(C)=O 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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| (3beta,5beta)-3-Hydroxypregnan-20-one | ChEBI | | 3beta-Hydroxy-5beta-pregnane-20-one | ChEBI | | 3beta-Hydroxy-5beta-tetrahydroprogesterone | ChEBI | | (3b,5b)-3-Hydroxypregnan-20-one | Generator | | (3Β,5β)-3-hydroxypregnan-20-one | Generator | | 3b-Hydroxy-5b-pregnane-20-one | Generator | | 3Β-hydroxy-5β-pregnane-20-one | Generator | | 3b-Hydroxy-5b-tetrahydroprogesterone | Generator | | 3Β-hydroxy-5β-tetrahydroprogesterone | Generator | | 3-deoxo-3b-Hydroxy-5b-dihydroprogesterone | HMDB | | 3b,5b-Pregnanolone | HMDB | | 3b-Hydroxy-5b-pregnan-20-one | HMDB, Generator | | 5b-Pregnan-3b-ol-20-one | HMDB | | 5b-Pregnane-3b-hydroxy-20-one | HMDB | | 5b-Pregnane-3b-ol-20-one | HMDB | | Pregnanolone I | HMDB | | 3-Hydroxypregnan-20-one | MeSH, HMDB | | Pregnanolone, (3beta)-isomer | MeSH, HMDB | | 3 Hydroxypregnan 20 one | MeSH, HMDB | | Epipregnanolone | ChEBI | | 3Β-hydroxy-5β-pregnan-20-one | Generator, HMDB | | 3-Deoxo-3beta-hydroxy-5beta-dihydroprogesterone | HMDB | | 3-Deoxo-3β-hydroxy-5β-dihydroprogesterone | HMDB | | 3beta,5beta-Pregnanolone | HMDB | | 3beta-Hydroxy-5beta-pregnan-20-one | HMDB | | 3β,5β-Pregnanolone | HMDB | | 5beta-Pregnan-3beta-ol-20-one | HMDB | | 5beta-Pregnane-3beta-hydroxy-20-one | HMDB | | 5beta-Pregnane-3beta-ol-20-one | HMDB | | 5β-Pregnan-3β-ol-20-one | HMDB | | 5β-Pregnane-3β-hydroxy-20-one | HMDB | | 5β-Pregnane-3β-ol-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-[(1S,2S,5S,7R,10R,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadecan-14-yl]ethan-1-one |
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| Traditional Name | 1-[(1S,2S,5S,7R,10R,11S,14S,15S)-5-hydroxy-2,15-dimethyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadecan-14-yl]ethanone |
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| CAS Registry Number | 128-21-2 |
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| SMILES | [H][C@@]1(CC[C@@]2([H])[C@]3([H])CC[C@]4([H])C[C@@H](O)CC[C@]4(C)[C@@]3([H])CC[C@]12C)C(C)=O |
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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-GRWISUQFSA-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-beta-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 | |
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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 | 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. | 7.74 minutes | 32390414 | | Predicted by Siyang on May 30, 2022 | 17.457 minutes | 33406817 | | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 2.03 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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| Epipregnanolone,1TMS,isomer #1 | CC(=O)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2738.7 | Semi standard non polar | 33892256 | | Epipregnanolone,1TMS,isomer #2 | CC(O[Si](C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C | 2783.9 | Semi standard non polar | 33892256 | | Epipregnanolone,1TMS,isomer #3 | C=C(O[Si](C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C | 2734.6 | Semi standard non polar | 33892256 | | Epipregnanolone,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2787.6 | Semi standard non polar | 33892256 | | Epipregnanolone,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2777.0 | Standard non polar | 33892256 | | Epipregnanolone,2TMS,isomer #1 | CC(O[Si](C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3133.8 | Standard polar | 33892256 | | Epipregnanolone,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2760.9 | Semi standard non polar | 33892256 | | Epipregnanolone,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2765.2 | Standard non polar | 33892256 | | Epipregnanolone,2TMS,isomer #2 | C=C(O[Si](C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3230.8 | Standard polar | 33892256 | | Epipregnanolone,1TBDMS,isomer #1 | CC(=O)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 2985.7 | Semi standard non polar | 33892256 | | Epipregnanolone,1TBDMS,isomer #2 | CC(O[Si](C)(C)C(C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C | 3032.5 | Semi standard non polar | 33892256 | | Epipregnanolone,1TBDMS,isomer #3 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C | 2995.8 | Semi standard non polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3282.4 | Semi standard non polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3254.0 | Standard non polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #1 | CC(O[Si](C)(C)C(C)(C)C)=C1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3369.8 | Standard polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3288.7 | Semi standard non polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3256.2 | Standard non polar | 33892256 | | Epipregnanolone,2TBDMS,isomer #2 | C=C(O[Si](C)(C)C(C)(C)C)[C@H]1CC[C@H]2[C@@H]3CC[C@@H]4C[C@@H](O[Si](C)(C)C(C)(C)C)CC[C@]4(C)[C@H]3CC[C@]12C | 3436.2 | Standard polar | 33892256 |
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| GC-MS Spectra| Spectrum Type | Description | Splash Key | Deposition Date | Source | View |
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| Experimental GC-MS | GC-MS Spectrum - Epipregnanolone GC-EI-TOF (Non-derivatized) | splash10-0udr-4900000000-39156fa655392898752f | 2017-09-12 | HMDB team, MONA, MassBank | View Spectrum | | Experimental GC-MS | GC-MS Spectrum - Epipregnanolone GC-EI-TOF (Non-derivatized) | splash10-0udr-4900000000-39156fa655392898752f | 2018-05-18 | HMDB team, MONA, MassBank | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Epipregnanolone GC-MS (Non-derivatized) - 70eV, Positive | splash10-1174-0292000000-fb2c0f3a1cfddb10cb08 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Epipregnanolone GC-MS (1 TMS) - 70eV, Positive | splash10-004i-2139000000-ab8a6de8f5a129af086e | 2017-10-06 | Wishart Lab | View Spectrum | | Predicted GC-MS | Predicted GC-MS Spectrum - Epipregnanolone 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 - Epipregnanolone 10V, Positive-QTOF | splash10-0uxr-0019000000-82b5328b4643c0421b0d | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 20V, Positive-QTOF | splash10-0uxr-1496000000-6fd25d5861771fb104b7 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 40V, Positive-QTOF | splash10-002o-2490000000-ba6e2bc4d584ea3d3a4b | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 10V, Negative-QTOF | splash10-014i-0029000000-826f869c8c8e3739b52e | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 20V, Negative-QTOF | splash10-014i-0059000000-699658e7c96cdaee62e8 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 40V, Negative-QTOF | splash10-0zmr-1092000000-19955e9b1f2b26db2425 | 2017-09-01 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 10V, Negative-QTOF | splash10-014i-0009000000-bbaa566ea695ae62f84e | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 20V, Negative-QTOF | splash10-014i-0029000000-ac1c6a15538469151b6c | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 40V, Negative-QTOF | splash10-00ks-0093000000-db70f670eb2440b743f9 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 10V, Positive-QTOF | splash10-0gb9-0019000000-5b53b3ba37ccafca449f | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 20V, Positive-QTOF | splash10-0lgi-1797000000-c11629ffa10cac4be118 | 2021-09-24 | Wishart Lab | View Spectrum | | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - Epipregnanolone 40V, Positive-QTOF | splash10-0a4m-8910000000-2813a600e98ff5997275 | 2021-09-24 | Wishart Lab | View Spectrum |
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