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Merck
CN

03805

Oenothein B

analytical standard

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关于此项目

经验公式(希尔记法):
C68H48O44
化学文摘社编号:
分子量:
1569.08
UNSPSC Code:
85151701
NACRES:
NA.24
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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


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Agnieszka Bazylko et al.
Journal of chromatography. A, 1173(1-2), 146-150 (2007-11-06)
A method was developed for separation and quantitative determination of oenothein B (OeB) and quercetin glucuronide (QG) in aqueous extract of Epilobii angustifolii herba by HPTLC-densitometry. The analyses were performed on HPTLC RP-18 WF(254) plates with 25% MeCN in water
Anna K Kiss et al.
Phytomedicine : international journal of phytotherapy and phytopharmacology, 18(7), 557-560 (2010-11-30)
Willow herb tea or preparation are available and relatively popular in the European market, and claimed to be effective inter alia because of their anti-inflammatory activity. The present study is therefore aimed at comparing the anti-inflammatory and antioxidant activity of
Annabella Vitalone et al.
Pharmacology, 69(2), 79-87 (2003-08-21)
We have previously shown that extracts of different Epilobium species, a phytotherapeutic agent used in folk medicine as a treatment for benign prostatic hyperplasia, inhibit proliferation of human prostate cells. The selectivity of this effect was evaluated in four different
M H Lee et al.
Cancer letters, 154(2), 131-136 (2000-05-12)
Nasopharyngeal carcinoma (NPC) is one of the high population malignant tumors among Chinese in southern China and southeast Asia. Epstein-Barr virus (EBV) is a human B lymphotropic herpes virus which is known to be closely associated with NPC. EBV DNA
Glaciane D Santos et al.
Medical mycology, 45(7), 609-618 (2007-11-23)
The fungus Paracoccidioides brasiliensis is the causative agent of paracoccidioidomycosis (PCM), the most prevalent human systemic mycosis in Latin America. Drug toxicity and the appearance of resistant strains have created the need to search for new therapeutic approaches. Plants with

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