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/418/501/product-dating-information-06-25-mk.pdf
AAS18
Amino Acid Standard
analytical standard
Seleccione un Tamaño
| Tamaño de envase | SKU | Disponibilidad | Precio |
|---|---|---|---|
| 5 mL | Disponible para enviar HOYdesdeToluca | MXP 2,424.00 | |
| 10 mL | Disponible para enviar HOYdesdeToluca | MXP 4,037.00 | |
| 10 x 1 mL | Comprobar disponibilidad del carrito | MXP 4,636.00 | |
| 5 x 5 mL | Comprobar disponibilidad del carrito | MXP 10,386.00 |
Acerca de este artículo
grade
analytical standard
shelf life
limited shelf life, expiry date on the label
analyte chemical class(es)
amino acids, peptides, proteins
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
application(s)
food and beverages
format
multi-component solution
storage temp.
2-8°C
Application
- Determination of L- and D-amino acids and glycine by liquid chromatography-tandem mass spectrometry (LC-MS/MS) following their derivatization with chiral Marfey’s reagent
- High-performance liquid chromatography (HPLC) based amino acid analysis during the characterization of defatted rice bran (DRB) protein concentrate to evaluate its iron binding ability
- Development of a gas chromatography-mass spectrometry (GC-MS) procedure for the profiling of 112 amino-carboxylic metabolites in human urine samples using 1,1,1,2,2,3,3-heptafluorobutyl chloroformate for derivatization and liquid-liquid microextraction for sample treatment
- Non-enantiomeric detection and quantification of amino acids in their various forms— free, dissolved, particulate, and total, in natural water samples by HPLC coupled with fluorescence detection using a C18 column
Packaging
Other Notes
- 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-Tyrosine
- L-Valine
1 of 1
Este artículo | |||
|---|---|---|---|
| format multi-component solution | format neat | format neat | format neat |
| technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) HPLC: suitable, gas chromatography (GC): suitable |
| grade analytical standard | grade analytical standard | grade analytical standard | grade analytical standard |
| application(s) food and beverages | application(s) food and beverages | application(s) food and beverages | application(s) food and beverages |
| shelf life limited shelf life, expiry date on the label | shelf life - | shelf life - | shelf life - |
| analyte chemical class(es) amino acids, peptides, proteins | analyte chemical class(es) amino acids, peptides, proteins | analyte chemical class(es) amino acids, peptides, proteins | analyte chemical class(es) amino acids, peptides, proteins |
signalword
Warning
hcodes
pcodes
Hazard Classifications
Met. Corr. 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Clase de almacenamiento
12 - Non Combustible Liquids
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Contenido relacionado
Datasheet
Número de artículo de comercio global
| SKU | GTIN |
|---|---|
| AAS18-10X1ML | 04061833418376 |
| AAS18-10ML | 04061838443731 |
| AAS18-5ML | 04061838443748 |
| AAS18-5X5ML | 04061833418383 |
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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Can this Amino acid standard be used for GCMS analysis? And can it be subjected to MSFTA derivitisation?
1 answer-
This standard can be derivatized using MSFTA and subsequently used for GCMS analysis.
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What is the suggested procedure to hydrolyse cystine? Does the hydrolysis procedure affect other amino acids?
1 answer-
This product is intended to be used as an analytical standard and is not suitable for chemical processing. Please contact your regional technical service group for assistance with suitable reagents for your application.
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Is there a recommended HPLC method and associated chromatogram to allow identification of each of the peaks and quantification of each amino acid in a sample (by retention time/integration)?
1 answer-
No method is available to identify each of the peaks for this product. Contact the regional Technical Service group for assistance with identifying chromatographic peaks according to specific analytical techniques.
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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What is the difference between AAS18 and 79248 (CRM)? What are the storage and shipping conditions? How does the quality of AAS18 compare to CRM?
1 answer-
AAS18 is stored at 2-8°C, while 79248 is stored at -20°C. Both are shipped at ambient temperature. Amino Acid 79248 is a CRM, Certified Reference Material, and AAS18 is a standard. AAS18 does not undergo the rigorous testing that is used for CRM standards.
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Wie lange ist der AAS18 Aminosäuren Standard haltbar, wenn er bei Temperaturen von 2-8°C gelagert wird?
1 answer-
The expiration date of this product is listed on the lot-specific Certificate of Analysis.
Please access the link below to download a Certificate:
https://www.sigmaaldrich.com/product/sial/aas18#product-documentationHelpful?
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