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Merck
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重要文件

A9781

Supelco

18种氨基酸，用于蛋白水解研究

analytical standard

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About This Item

分類程式碼代碼:
85151701
eCl@ss:
32160406
NACRES:
NA.24
暫時無法取得訂價和供貨情況

等級

analytical standard

成份

L-Alanine
Ammonium chloride
L-Arginine
L-Aspartic acid
L-Cystine
L-Glutamic acid
Glycine
L-Histidine
L-Isoleucine
L-Leucine
L-Lysine
L-Methionine
L-Phenylalanine
L-Proline
L-Serine
L-Threonine
L-Tryosine
L-Tryptophan
L-Valine

分析物化學類別

amino acids, peptides, proteins

技術

HPLC: suitable
gas chromatography (GC): suitable

顏色

colorless

應用

food and beverages

形式

neat

儲存溫度

2-8°C

相關類別

應用

有关合适仪器技术的更多信息，请参考产品′s分析证书。如需进一步支持，请联系技术服务。

其他說明

列出的氨基酸均以 0.5μmol/mL 溶于 0.2 N 柠檬酸钠溶液，但 L-胱氨酸为 0.25μmol/mL，pH 为 2.2。

儲存類別代碼

12 - Non Combustible Liquids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
0000368321
0000368446
0000343112
0000294565
0000343112

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Sigma-Aldrich

260614

3-苯甲酰基丙烯酸乙酯

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Industrial cell culture requires substantial energy to generate protein. The protein generated is not only the product of interest (IgG in this case), but also the protein associated with biomass. Here
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Questions

1–4 of 4 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

      Helpful?

  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

      Helpful?

  3. Good afternoon. I am searching for a mixture of aminoacids to built method in HPLC to identify several amino acids. I need to know their concentration in the mixture to construct a calibration curve. Will this the best option? thanks

    1 answer

    1. Amino Acids Mix Solution - 79248-5X2ML is suitable for this application. The COA can be found here, https://www.sigmaaldrich.com/certificates/Graphics/COfAInfo/fluka/pdf/PDF746486.pdf.

      Helpful?

  4. A9781 is it suitable for PDA detector HPLC

    1 answer

    1. Product A9781-5ML is suitable for HPLC analysis. While the analysis of amino acids using a PDA/UV requires a lot of steps, it is still possible and practical. However, most HPLC methods for amino acid quantification uses Mass Spectrometry (MS) or Charged Aerosol Detector (CAD) detectors.

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