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
Fortfahren mit
P2658
Poly-L -Lysin -hydrochlorid
suitable for cell culture, Mol wt 15,000-30,000
Synonym(e):
L-Lysine hydrochloride homopolymer
Größe auswählen
| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
25 mg | Warenkorb auf Verfügbarkeit prüfen | € 209,00 |
100 mg | Warenkorb auf Verfügbarkeit prüfen | € 635,00 |
500 mg | Warenkorb auf Verfügbarkeit prüfen | € 2.510,00 |
1 g | Warenkorb auf Verfügbarkeit prüfen | € 3.770,00 |
Über diesen Artikel
Produktname
Poly-
form
powder or solid
Quality Segment
mol wt
15,000-30,000
technique(s)
cell culture | mammalian: suitable
color
white to light yellow
application(s)
cell analysis
storage temp.
−20°C
Application
Biochem/physiol Actions
Analysis Note
Other Notes
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description mol wt 15,000-30,000 | description mol wt >30,000 | description mol wt ≥300,000 | description mol wt ≥300,000 |
| form powder or solid | form powder | form powder | form powder or solid |
| technique(s) cell culture | mammalian: suitable | technique(s) FTIR: suitable, cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable |
| storage temp. −20°C | storage temp. −20°C | storage temp. −20°C | storage temp. −20°C |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| color white to light yellow | color white to light yellow | color white to off-white | color white to off-white |
| application(s) cell analysis | application(s) - | application(s) cell analysis | application(s) - |
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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What's the sterile level of this product? Meanwhile, does γ-irradiation damage your γ-irradiated products.
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This particular product is non-sterile as it is not gamma irradiated. Poly-L-lysine products are offered that are gamma-irradiated that are quality guaranteed for sterility and verified to perform as a coating factor for cell attachment. The effects of gamma irradiation on polymers in great detail are discussed in the citation below. Chain scission and chain crosslinking can occur after being gamma irradiated.
Naikwadi AT, Sharma BK, Bhatt KD, Mahanwar PA. Gamma Radiation Processed Polymeric Materials for High Performance Applications: A Review. Front Chem. 2022 Mar 14;10:837111. doi: 10.3389/fchem.2022.837111. PMID: 35360545; PMCID: PMC8964295.
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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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Hello, can you confirm the chemical nature of the termini of this polymer? Is it -NH2 and -COOH? or -NCH3 and -COCH3?
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The carboxyl end of this material has a free -COOH and the amino end has a free -NH2.
Helpful?
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