This material is considered deacetylated, with a molecular weight specification based on the number of monomeric units, which is greater than or equal to 400. However, it often has a molecular weight of 2000 units or higher. The lot-specific Certificate of Analysis should be consulted, as the molecular weight will vary based on the Degree of Polymerization.
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G7753
Glycol chitosan
≥60% (titration), crystalline
Synonim(y):
Glycol chitin, deacetylated
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| Do Państwa/SKU | Dostępność | Cena netto |
|---|---|---|
5 g | Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności | 1480,00 zł |
Informacje o tej pozycji
1480,00 zł
Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności
Pomoc techniczna
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Pozwól nam pomócform
crystalline
Quality Segment
mol wt
degree of polymerization ≥400
concentration
≥60% (titration)
storage temp.
−20°C
SMILES string
N[C@H]1[C@@H](O[C@@H]([C@H]([C@@H]1O)O[C@H]2[C@@H]([C@H]([C@@H]([C@H](C2)COCCO)O[C@H]3[C@@H]([C@H]([C@@H]([C@H](C3)COCCO)O)O)N)O)N)COCCO)O.[N]
InChI key
JRMFSJFIJOJHKN-GBSNKSGZSA-N
Application
Glycol chitosan increases membrane permeability and leakage in Glycine max Harosoy 63w cells. [1]
Other Notes
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.
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Ta pozycja | |||
|---|---|---|---|
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| form crystalline | form (Coarse ground flakes and powder) | form powder | form solid |
| storage temp. −20°C | storage temp. - | storage temp. 2-30°C | storage temp. - |
| concentration ≥60% (titration) | concentration - | concentration - | concentration - |
| mol wt degree of polymerization ≥400 | mol wt 310000-375000 Da | mol wt - | mol wt 190000-375000 Da |
Klasa składowania
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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안녕하세요. 비율별로 실험을 진행하고자 하는데 glycol chitosan의 분자량을 알 수 있을까요?
1 answer-
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How can I determine the shelf life / expiration / retest date of this product?
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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 the product considered deacetylated and is the 'degree of polymerization' specification given in a number of units?
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The material is indeed considered deacetylated. The molecular weight specification is given in terms of the number of monomeric units (greater than or equal to 400), but it often measures at 2000 units or higher. Recent lots (066K1894, 046K1080, 105K1648, and 065K1306) all have an average molecular weight of approximately 400,000. This is based on a monomer molecular weight of 203 and a degree of polymerization of 2000.
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What is the degree of substitution for ethylene glycol in the product?
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The degree of substitution of ethylene glycol is not determined.
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It states that the degree of polymerization is over 400, but are more than 400 units continuously combined based on the chitosan unit?
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The polymerization degree is at minimum is 400. Please review the lot specific Certificate of Analysis for this value: https://www.sigmaaldrich.com/certificates/COFA/G7/G7753/G7753-BULK________SLBW9324__.pdf.
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What is the degree of deacetylation?
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This product is considered to be deacetylated. Chitosan is the deacetylated form of chitin. The degree of acetylation is not determined for this product, but is expected to be approximately 90%.
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How is the titration performed?
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The titration protocol is proprietary, however it is a colloidal titration method involving the use of potassium polyvinyl sulfate.
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