生物来源
egg yolk
质量水平
形式
lyophilized powder
组成
Cholesterol, 9 μmol/package
L-α-Phosphatidylcholine (egg yolk), 63 μmol/package
Stearylamine, 18 μmol/package
官能团
carboxylic acid
运输
ambient
储存温度
−20°C
应用
生化/生理作用
警示用语：
Danger
危险声明
危险分类
Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
I have purchased Product L4395, Liposome Kit. Is there a difference between positive and negative liposomes?
The choice is dependent upon what is being encapsulated and how it is being used. A good reference discussing this question is Ogiso, T., et al., Effect of positively and negatively charged liposomes on skin permeation of drugs. J. Drug Target, 9(1), 49-59 (2001).
How is Product L4395, Liposome Kit, used?
The Liposomes of a large multilamellar structure type are the most widely used. They can be prepared using Sigma liposome mixtures by concentrating an organic solvent solution of lipids to a thin film on the walls of a container such as by rotary evaporation or by drying in glass with a stream of nitrogen gas. Then, under appropriate conditions, an aqueous solution is added to the thin film and with agitation multilamellar vesicles should form spontaneously with little effort. Large or small unilamellar structured liposomes can also be prepared by varying procedure or conditions. Please see the product insert for Product No. L4031 (the link below) for a step by step protocol that will work for this product also.
How do I prepare the Product L4395, Liposome Kit liposomes?
Refer to the product information sheet (under Documents, above) for L4031 for preparation information.
I'm thinking of purchasing Product L4395, Liposome Kit. Why would one use positive vs. negative liposomes?
Analogous to poly-L-lysine, one may need positively charged agents to deliver drugs to cells, hence positive liposomes.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
My question is not addressed here, how can I contact Technical Service for assistance?
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