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
推薦產品
生物源
Escherichia coli
種類
Type VI
化驗
≥98% (HPLC)
形狀
powder
光學活性
[α]20/D -34.0 to -30.0 °, c = 1% in water
技術
HPLC: suitable
顏色
white to off-white
mp
184-186 °C
溶解度
water: 50 mg/mL, clear, colorless
儲存溫度
−20°C
SMILES 字串
O[C@@]1(O[C@@]([C@@H]([C@H](C1)O)NC(C)=O)([H])[C@@H]([C@@H](CO)O)O)C(O)=O
InChI
1S/C11H19NO9/c1-4(14)12-7-5(15)2-11(20,10(18)19)21-9(7)8(17)6(16)3-13/h5-9,13,15-17,20H,2-3H2,1H3,(H,12,14)(H,18,19)/t5-,6+,7+,8+,9+,11-/m0/s1
InChI 密鑰
SQVRNKJHWKZAKO-PFQGKNLYSA-N
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訊號詞
Warning
危險聲明
危險分類
Eye Irrit. 2
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 2
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
從最近期的版本中選擇一個：
分析證明 (COA)
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Enzymatic Assay of Neuraminidase applies to products that have a specification for neuraminidase content by enzymatic determination.
在测定神经氨酸酶活性时，使用了一种以N-乙酰新胺酸为酶底物的比色法进行测定。神经氨酸酶是一种可促进流感病毒从感染细胞中释放的水解酶。
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Helpful?
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
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I was wondering if the Sigma-Aldrich (A2388) N-Acetylneuraminic acid from Escherichia coli, ≥98%, is suitable to use in vitro on oligodendrocytes. In other words, is it sterile? Thank you in advance.
1 answer-
This product has not been tested for in vivo or in vitro applications. Suitability for in vitro use will need to be validated by the end-user. The material is purified from Escherichia coli and has not tested for endotoxin. Solutions would require sterile filtration prior to adding to cultures. Alternatively, product 110138 is a synthetically produced product option. While not tested for in vitro use, it may be a better option for sensitive cell lines. It is not sterile and solutions would also required filter sterilization. See the link below to review this product:
https://www.sigmaaldrich.com/product/mm/110138Helpful?
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Active Filters
我們的科學家團隊在所有研究領域都有豐富的經驗，包括生命科學、材料科學、化學合成、色譜、分析等.
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