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重要文件

P5638

Sigma-Aldrich

L-α-磷脂酰胆碱

from soybean, Type II-S, 14-29% choline basis

同義詞:

1,2-二酰基-sn-甘油-3-胆碱磷酸, 3-sn-磷脂酰胆碱, L-α-卵磷脂, Azolectin, PC

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About This Item

CAS號碼:
Beilstein:
5209585
EC號碼:
分類程式碼代碼:
12352211
NACRES:
NA.25
暫時無法取得訂價和供貨情況

生物源

soybean

種類

Type II-S

形狀

powder or solid

濃度

14-29% (choline)

官能基

phospholipid

脂質類型

phosphoglycerides

運輸包裝

ambient

儲存溫度

2-8°C

SMILES 字串

[P](=O)([O-])(OC[C@H](OC(=O)CCCCCCC\C=C/C\C=C/CCCCC)COC(=O)CCCCCCCCCCCCCCC)OCC[N+](C)(C)C

InChI

1S/C42H80NO8P/c1-6-8-10-12-14-16-18-20-21-23-25-27-29-31-33-35-42(45)51-40(39-50-52(46,47)49-37-36-43(3,4)5)38-48-41(44)34-32-30-28-26-24-22-19-17-15-13-11-9-7-2/h14,16,20-21,40H,6-13,15,17-19,22-39H2,1-5H3/b16-14-,21-20-/t40-/m1/s1

InChI 密鑰

JLPULHDHAOZNQI-ZTIMHPMXSA-N

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一般說明

P5638是大豆磷脂的粗提物。

纯化大豆磷脂酰胆碱的典型脂肪酸组分含量约为13% C16:0(棕榈酸),4% C18:0(硬脂酸),10% C18:1(油酸),64% C18:2(亚油酸)和6% C18:3(亚麻酸)以及其他次要脂肪酸成分。 根据该组成计算得到的平均分子量约为776。

纯化的磷脂酰胆碱可溶于氯仿和乙醇。

其他主要的磷脂成分包括磷脂酰乙醇胺和肌醇磷脂。可能含有其他磷脂和中性脂质,如甘油三酯、生育酚和甾醇。还可能含有碳水化合物。

一种已公开方法通过测量氧化指数来测定脂质体制剂中的卵磷脂酰胆碱氧化量。[1]氧化指数是指在233nm处的吸光度与215nm处的吸光度之比。选择215nm波长是因为脂肪酸羰基在该波长处几乎没有吸光度,因此可以遵循比尔定律。

已有一种胆碱含量测定方法被公开。[2]

生化/生理作用

磷脂酰胆碱是真核细胞中的主要膜磷脂。除了作为细胞膜的主要结构成分外,磷脂酰胆碱还可作为几种脂质信使的储库。它是生物活性脂质溶血磷脂酰胆碱、磷脂酸、二酰基甘油、血小板活化因子和花生四烯酸的来源。[3]

磷脂酰胆碱被用于制备囊泡悬浮液,通常称为脂质体,或作为单层脂质体。[4][5] 已使用含1%大豆磷脂酰胆碱的己烷溶液形成单层脂质体。[6]

带正电荷花青染料的荧光会随膜电位变化而变化,已有研究使用该染料测定了缬氨霉素诱导的红细胞和磷脂(蛋黄磷脂酰胆碱加胆固醇)囊泡悬浮液的膜电位变化。[7]

已有研究将纯化的视紫红质掺入大豆磷脂酰胆碱囊泡中。[8]
脑磷脂脑中的主要结构磷脂,包含脂肪总量的约15%;主要局限于灰质。

品質

P5638是一种大豆粗提物,含有许多其他脂质。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

Lot/Batch Number

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Questions

1–2 of 2 Questions  
  1. 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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  2. 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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