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Merck

PHR1963

Supelco

(+)-儿茶素

Pharmaceutical Secondary Standard; Certified Reference Material

别名:

(+)-儿茶素, (+)-氰醇, D-儿茶素

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50 MG
$545.00

$545.00


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50 MG
$545.00

About This Item

经验公式(希尔记法):
C15H14O6
CAS号:
分子量:
290.27
MDL编号:
UNSPSC代码:
41116107
NACRES:
NA.24

$545.00


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等级

certified reference material
pharmaceutical secondary standard

质量水平

Agency

traceable to USP 1096790

API类

catechins

CofA

current certificate can be downloaded

包装

pkg of 50 mg

应用

pharmaceutical

包装形式

neat

储存温度

2-8°C

SMILES字符串

O[C@H]1Cc2c(O)cc(O)cc2O[C@@H]1c3ccc(O)c(O)c3

InChI

1S/C15H14O6/c16-8-4-11(18)9-6-13(20)15(21-14(9)5-8)7-1-2-10(17)12(19)3-7/h1-5,13,15-20H,6H2/t13-,15+/m0/s1

InChI key

PFTAWBLQPZVEMU-DZGCQCFKSA-N

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一般描述

该认证标准物质(CRM)根据ISO 17034和ISO/IEC 17025生产和认证。有关使用此CRM的所有信息都可以在分析证书上找到。


用于质量控制的药品二级标准品,为制药实验室和制造商提供了一种方便且经济的替代方案,可用于内部工作标准品的制备。

(+)-儿茶素是一种黄烷-3-醇,属于多酚类黄酮家族,称为儿茶素。存在于绿茶中,具有诸多健康益处,如抗氧化、抗炎、抗增殖和抗血小板活性。

应用

该医药二级标准品还可作用:

  • 建立超高效液相色谱-三重四极杆串联质谱(UHPLC-MS-MS)法以同时测定3种茶叶样品中8种儿茶素和4种茶黄素
  • 通过UHPLC - UV检测器分离测定绿茶样品中6种茶儿茶素和咖啡因
  • 通过等密度高效液相色谱法同时分析五种天然存在的儿茶素
  • 采用红外辅助萃取法(IRAE)结合高效液相色谱法(HPLC)对葡萄籽样品中的儿茶素、表儿茶素和原花青素B2进行分离和定量分析[1]
  • 采用乳酸乙酯、水和乳酸乙酯+水的混合物加压液体萃取法分析绿茶中的咖啡因和儿茶素[2]

分析说明

这些二级标准品可追溯至USP、EP和BP一级标准品。

附注

想要查看本品的检验报告示例,请在下框中输入LRAC2624。这只是一个示例证书,可能与您收到的批次不符。

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象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Study on infrared-assisted extraction coupled with high performance liquid chromatography (HPLC) for determination of catechin, epicatechin, and procyanidin B2 in grape seeds
Cai Y, et al.
Food Chemistry, 127, 1872-1877 (2011)
Pressurized liquid extraction of caffeine and catechins from green tea leaves using ethyl lactate, water and ethyl lactate+ water mixtures
Bermejo DV, et al.
Food and Bioproducts Processing, 96, 106-112 (2015)
Giftson J Senapathy et al.
Molecules (Basel, Switzerland), 25(21) (2020-10-28)
Worldwide, lung cancer remains one of the leading cancers with increasing mortality rates. Though chemotherapy for lung cancer is effective, it is always accompanied by unavoidable and grave side effects. Photodynamic therapy (PDT), using novel photosensitizers, is an advanced treatment

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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