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| Year of first isolation: | 2009 |  | Formula: | C27H42O6 |  | Molecular weight: | 462 |  | Occurence in plants: |  | Klaseopsis chinensis [Compositae] »   ![Wikipedia: Klaseopsis chinensis [Compositae]](/images/wikipedia.png) 
 |  | Occurence in animals: |  |  |  |   |  |
 | | Canonical SMILES | CC(=C)CCC(C(C)(C1CCC2(C1(CCC3C2=CC(=O)C4C3(CC(C(C4)O)O)C)C)O)O)O |  | Isomeric SMILES [ PubChem: search | XML ]
 [ ChemSpider: search ]
 | C1[C@]2([C@@H](C[C@H]([C@H]1O)O)C(=O)C=C1[C@@H]2CC[C@]2([C@]1(CC[C@@H]2[C@](C)([C@@H](CCC(=C)C)O)O)O)C)C »  
 |  | IUPAC Name | (2S,3R,5R,9R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-dihydroxy-6-methylhept-6-en-2-yl]-2,3,14-trihydroxy-10,13-dimethyl-2,3,4,5,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-6-one |  | CAS-RN |  |  | PubChem CID | 11730260 |  | InChiKey [ ChemIDPlus: search ]
 | WIBVTMSKFSKIMO-JJJZTNILSA-N |  | InChI | InChI=1S/C27H42O6/c1-15(2)6-7-23(31)26(5,32)22-9-11-27(33)17-12-19(28)18-13-20(29)21(30)14-24(18,3)16(17)8-10-25(22,27)4/h12,16,18,20-23,29-33H,1,6-11,13-14H2,2-5H3/t16-,18-,20+,21-,22-,23+,24+,25+,26+,27+/m0/s1 | 
 
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 | | EI-MS m/z (relative intensity %) |  |  | CI-MS (NH3) m/z |  |  | ESI-MS (negative mode) m/z | 461 [M-H]-, 521 [M+CH3COO]-, 559 [M+HSO4]- | 
 
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 | | C5D5N |  | 01 | 38.27 |  | 02 | 68.39* |  | 03 | 68.33* |  | 04 | 32.72 |  | 05 | 51.67 |  | 06 | 203.70 |  | 07 | 121.96 |  | 08 | 166.31 |  | 09 | 34.72 |  | 10 | 38.94 |  | 11 | 21.88 |  | 12 | 32.28 |  | 13 | 48.37 |  | 14 | 84.44 |  | 15 | 32.03 |  | 16 | 21.39 |  | 17 | 50.30 |  | 18 | 18.13 |  | 19 | 24.72 |  | 20 | 76.95 |  | 21 | 21.68 |  | 22 | 76.31 |  | 23 | 30.88 |  | 24 | 36.08 |  | 25 | 146.49 |  | 26 | 110.59 |  | 27 | 22.87 | 
 | | C5D5N |  | 01-Ha | 2.165 (m) |  | 01-He | 1.923 (m) |  | 02-Ha | 4.175 (br, d, 10.4) |  | 03-He | 4.228 (br, s) |  | 04-Ha |  |  | 04-He |  |  | 05-H | 3.011 (dd, 3.6, 12.2) |  | 07-H | 6.257 (d, 2.4) |  | 09-H | 3.597 (m) |  | 11-Ha |  |  | 11-He |  |  | 12-Ha |  |  | 12-He |  |  | 15-Ha |  |  | 15-Hb |  |  | 16-Ha |  |  | 16-Hb |  |  | 17-H | 2.924 (br, t, 9.0) |  | 18-Me | 1.221 (s) |  | 19-Me | 1.075 (s) |  | 21-Me | 1.575 (s) |  | 22-H | 3.840 (br, d, 10) |  | 23-Ha |  |  | 23-Hb |  |  | 24-Ha | 2.277 (m) |  | 24-Hb | 2.568 (m) |  | 26-Ha | 4.754 (br, s) |  | 26-Hb | 4.791 (br, s) |  | 27-Me | 1.676 (s) |  | [OH] | 4.791 (s), 5.930 (s), 6.032 (2H, br, s), 6.302 (s) | 
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 | | M.P. | °C ; |  | [α]D25 | +45 ° (c 0.006; MeOH) |  | IR (KBr) ν max (cm-1) | 3377, 2945, 1646, 1445, 1380, 1356, 1062, 892, 875, 685, 616 |  | UV (EtOH) λ max (log ε) | 240.8 () ; | 
 
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 |  | Permanent link to this datasheet: 25,26-DIDEHYDROPONASTERONE A |  |