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
Wichtige Dokumente
30200
L-Cystin
≥99.7% (TLC)
Synonym(e):
(R,R)-3,3′-Dithio-bis-(2-aminopropionsäure)
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About This Item
Empfohlene Produkte
Produktbezeichnung
L-Cystin, ≥99.7% (TLC)
Qualitätsniveau
Assay
≥99.7% (TLC)
Form
powder or crystals
Optische Aktivität
[α]20/D −219±5°, c = 1% in 1 M HCl
Glührückstand
≤0.1% (as SO4)
Verlust
≤0.1% loss on drying
Farbe
white
mp (Schmelzpunkt)
>240 °C (dec.) (lit.)
Löslichkeit
1 M HCl: 0.5 g/10 mL, clear, colorless
Anionenspuren
chloride (Cl-): ≤500 mg/kg
sulfate (SO42-): ≤100 mg/kg
Kationenspuren
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤6 mg/kg
Fe: ≤10 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤150 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
Anwendung(en)
peptide synthesis
SMILES String
N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
InChI
1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
InChIKey
LEVWYRKDKASIDU-IMJSIDKUSA-N
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Anwendung
Biochem./physiol. Wirkung
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves, type N95 (US)
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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/449/386/product-dating-information-mk.pdfHelpful?
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