InChI
1S/C68H50O44/c69-22-1-14(2-23(70)39(22)79)59(93)109-56-52(92)68(112-61(95)16-5-26(73)41(81)27(74)6-16)106-34-13-103-63(97)20-11-32(46(86)50(90)38(20)37-19(64(98)107-54(34)56)9-30(77)44(84)49(37)89)104-53-21(10-31(78)45(85)51(53)91)66(100)111-58-57(110-60(94)15-3-24(71)40(80)25(72)4-15)55-33(105-67(58)101)12-102-62(96)17-7-28(75)42(82)47(87)35(17)36-18(65(99)108-55)8-29(76)43(83)48(36)88/h1-11,33-34,52,54-58,67-92,101H,12-13H2
InChI key
SHYSVHSGJVNSLX-UHFFFAOYSA-N
grade
analytical standard
assay
≥80% (HPLC)
shelf life
limited shelf life, expiry date on the label
application(s)
food and beverages
format
neat
storage temp.
2-8°C
Quality Level
General description
Oenothein B is a dimeric ellagitannin compound which is found commonly in genusOenothera.
Application
Oenothein B may be used as a reference standard for the determination of oenothein B in aqueous extracts of Epilobii angustifolli herba and Epilobium angustifolium L. by high performance thin-layer chromatography (HPTLC)-densitometry, in plant materials by HPLC combined with diode array detector (DAD) and mass spectrometry (MS) and in Eucalyptus globulus leaves by HPLC-DAD coupled to electrospray ionization (EIS) MS.
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
K Miyamoto et al.
Japanese journal of cancer research : Gann, 84(1), 99-103 (1993-01-01)
The antitumor effect of oenothein B, a macrocyclic ellagitannin from Oenothera erythrosepala Bordas, on rodent tumors was studied. Oenothein B exhibited a strong antitumor activity against MM2 ascites tumors upon intraperitoneal administration to the mice before or after the tumor
A Kiss et al.
Phytomedicine : international journal of phytotherapy and phytopharmacology, 13(4), 284-289 (2006-02-24)
An aqueous extract of Epilobium angustifolium and its main compound oenothein B (OeB), a dimeric macrocyclic ellagitannin, are specifically able to induce the neutral endopeptidase (NEP) in prostate cancer cells. The angiotensin-converting enzyme (ACE) is not influenced. Additionally, a weak
Barbara Hevesi Tóth et al.
Journal of pharmaceutical and biomedical analysis, 49(1), 26-31 (2008-11-18)
Epilobium species (Onagraceae) are commonly used herbal remedies in traditional, adjuvant therapy of benignus prostate hyperplasia (BPH), however the pharmacological and clinical standardization of commercially available Epilobii herba (willow-herb) remains difficult. Willow-herb products usually consist of mixtures from various species
Sebastian Granica et al.
Phytochemical analysis : PCA, 23(6), 582-587 (2012-03-08)
Oenothein B (OeB) is a dimeric macrocyclic ellagitannin occurring mainly in the genus Oenothera. In the literature no validated HPLC method for quantification of this compound has been reported. To develop and validate an efficient HPLC method for quantification of
Improved and Validated HPTLC Method for Quantification of Oenothein B and its Use for Analysis of Epilobium angustifolium L.
Shikov, et al.
Journal of Planar Chromatography--Modern TLC, 23(1), 70-74 (2010)
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