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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
Wichtige Dokumente
A9165
N-Acetyl-L-Cystein
≥99% (TLC), suitable for cell culture, BioReagent
Synonym(e):
LNAC, NAC
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About This Item
Empfohlene Produkte
Produktbezeichnung
N-Acetyl-L-Cystein, BioReagent, suitable for cell culture
Produktlinie
BioReagent
Qualitätsniveau
Assay
≥99% (TLC)
Form
powder
Methode(n)
cell culture | mammalian: suitable
Farbe
white to off-white
mp (Schmelzpunkt)
106-108 °C (lit.)
Löslichkeit
H2O: 100 mg/mL (with heating)
Lagertemp.
2-8°C
SMILES String
CC(=O)N[C@@H](CS)C(O)=O
InChI
1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)/t4-/m0/s1
InChIKey
PWKSKIMOESPYIA-BYPYZUCNSA-N
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Anwendung
Biochem./physiol. Wirkung
Anwendung
auch häufig zusammen mit diesem Produkt gekauft
Signalwort
Warning
H-Sätze
Gefahreneinstufungen
Eye Irrit. 2
Lagerklassenschlüssel
13 - Non Combustible Solids
WGK
WGK 2
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves, type N95 (US)
Hier finden Sie alle aktuellen Versionen:
Analysenzertifikate (COA)
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Verwandter Inhalt
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Chromatograms
application for HPLC-
How can I determine the shelf life / expiration / retest date of this product?
1 Antwort-
Hilfreich?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 Antwort-
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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Is this product sterile? If not, can I pass it through a 0.22 um filter unit?
1 Antwort-
This product is not supplied sterile. However, if the water used is ultrapure, cell culture grade, and prepared in a sterile environment, there is no need to filter the solution.
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Can aliquots be freeze-thawed more than once?
1 Antwort-
Product A9165 recommended storage is 2-8°C, Regrettably, information about stability after the material is reconstituted is unavailable. Generally speaking, avoid repeated freeze-thawed.
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Can aliquots be stored long term at -80 Celsius?
1 Antwort-
As mentioned in the previous Q&A, it is recommended to store the aliquoted solutions at -20 °C for up to 1 month. Stability testing at -80°C has not been performed. It is not known if lower storage temperatures will extend the stability of the solution.
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How can I make 1M N-acyteyl cysteine solution? Should I dilute in PBS or distilled water?
1 Antwort-
This product can be dissolved in H2O up to 100 mg/mL (with heating) . PBS can be used as well. Aliquot and store solutions at -20 deg. C up to 1 month.
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What is the molecular weight of product A9165, N-Acetyl-L-cysteine (NAC)?
1 Antwort-
As listed on the product detail page, the molecular weight is determined as 163.19
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How stable is a solution of Product A9165, N-acetyl cysteine (NAC)?
1 Antwort-
Aqueous solutions of cysteine oxidize to cystine on contact with air at neutral or alkaline pH. We recommend making aqueous solutions fresh. NAC is relatively stable in acid. Solutions in acid are stable and can be stored at -20 °C.
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What is the half life of Product A9165, N-Acetyl-L-cysteine (NAC), in cell culture?
1 Antwort-
We have not tested the half-life of NAC solutions in our labs here at Sigma. However, this subject has been reviewed in Neuropsychopharmacology, 29, 2018-2023 (2004).
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What is the Department of Transportation shipping information for this product?
1 Antwort-
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.
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