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Year of first isolation: | 
1981 |  
| Formula: | C33H54O12 |  
| Molecular weight: | 642 |  
| Occurence in plants:  |  
Silene brahuica [Caryophyllaceae] »   ![Wikipedia: Silene brahuica [Caryophyllaceae]](/images/wikipedia.png)  
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| Occurence in animals:  |  
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| Canonical SMILES | CC12CCC3C(=CC(=O)C4C3(CC(C(C4)O)O)C)C1(CCC2C(C)(C(CCC(C)(C)O)OC5C(C(C(C(O5)CO)O)O)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[C@@H]1C(C([C@H](C(O1)CO)O)O)O)O)O)C)C »  
  |  | IUPAC Name | (2R,3R,5R,9R,10R,13R,17S)-17-[(2R,3R)-2,6-dihydroxy-6-methyl-3-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyheptan-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 | 81655-86-9  |  | PubChem CID | 196202  |  InChiKey [ ChemIDPlus: search ] | OYLAWXRQIJWVHG-PRYDOBOQSA-N |  | InChI | InChI=1S/C33H54O12/c1-29(2,41)9-8-24(45-28-27(40)26(39)25(38)22(15-34)44-28)32(5,42)23-7-11-33(43)17-12-19(35)18-13-20(36)21(37)14-30(18,3)16(17)6-10-31(23,33)4/h12,16,18,20-28,34,36-43H,6-11,13-15H2,1-5H3/t16-,18-,20+,21+,22+,23-,24+,25-,26-,27+,28+,30+,31+,32+,33?/m0/s1 |  
  
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| CI-MS (NH3) m/z |   |  | EI-MS m/z (relative intensity %) | 623 (M-18)+ (0.3), 606 (0.8), 588 (0.5), 570 (0.2), 489 (1.1), 473 (2.0), 463 (2.2), 455 (3.8), 445 (5), 444 (4), 427 (34), 426 (35), 409 (12), 408 (11), 393 (3.8), 363 (3.7), 358 (5), 352 (17), 345 (100), 344 (94), 327 (67), 309 (22), 300 (34), 163 (20), 145 (22), 142 (33), 99 (66), 81 (44), 69 (42). |  | HR-MS |   |  
  
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| C5D5N |  | 01 |   |  | 02 |   |  | 03 |   |  | 04 |   |  | 05 |   |  | 06 |   |  | 07 |   |  | 08 |   |  | 09 |   |  | 10 |   |  | 11 |   |  | 12 |   |  | 13 |   |  | 14 |   |  | 15 |   |  | 16 |   |  | 17 |   |  | 18 |   |  | 19 |   |  | 20 |   |  | 21 |   |  | 22 |   |  | 23 |   |  | 24 |   |  | 25 |   |  | 26 |   |  | 27 |   |  
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| C5D5N |  | 01-Ha |   |  | 01-He |   |  | 02-Ha | 4.0-4.2   |  | 03-He | 4.0-4.2   |  | 04-Ha |   |  | 04-He |   |  | 05-H |   |  | 07-H | 6.11   |  | 09-Ha | 3.42   |  | 11-Ha |   |  | 11-He |   |  | 12-Ha |   |  | 12-He |   |  | 14-H |   |  | 15-Ha |   |  | 15-Hb |   |  | 16-Ha |   |  | 16-Hb |   |  | 17-H |   |  | 18-Me | 1.09   |  | 19-Me | 0.90   |  | 21-Me | 1.49   |  | 22-H | 3.59   |  | 23-Ha |   |  | 23-Hb |   |  | 24-Ha |   |  | 24-Hb |   |  | 26-Me | 1.24 |  | 27-Me | 1.30   |  
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| M.P. | 254-256 °C |  | [α]D22 | + 93.1 ? 2 ° (c 1.02; MeOH) |  | IR (KBr) ν max (cm-1) | 3370-3440 (OH), 1645 (cyclohexenone) |  | UV (EtOH) λ max (log ε) | 246 (4.15) |  
  
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Drosophila melanogaster BII cell assay: EC50 = 4.1 x 10-5M  |  
  
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Permanent link to this datasheet: SILENEOSIDE A
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