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
C1778
Koffein
Sigma Reference Standard, vial of 250 mg
Synonym(e):
1,3,7-Trimethylxanthin
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CHF 227.00
CHF 793.00
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Produktname
Koffein, Sigma Reference Standard, vial of 250 mg
SMILES string
CN1C(=O)N(C)c2ncn(C)c2C1=O
InChI
1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3
InChI key
RYYVLZVUVIJVGH-UHFFFAOYSA-N
form
crystalline
powder
packaging
vial of 250 mg
mp
234-236.5 °C (lit.)
solubility
H2O: soluble 18.7 g/L at 16 °C
Quality Level
Gene Information
human ... ADORA1(134), ADORA2A(135), ADORA2B(136), ADORA3(140), PDE4B(5142)
mouse ... Adora2b(11541)
rat ... Adora1(29290), Adora2a(25369)
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Dieser Artikel | C7731 | 1085003 | PHR1009 |
|---|---|---|---|
| grade Sigma Reference Standard | grade anhydrous | grade pharmaceutical primary standard | grade certified reference material, pharmaceutical secondary standard |
| mp 234-236.5 °C (lit.) | mp 234-236.5 °C (lit.) | mp 234-236.5 °C (lit.) | mp 234-236.5 °C (lit.) |
| form crystalline | form crystalline, powder | form - | form - |
| packaging vial of 250 mg | packaging - | packaging - | packaging - |
| solubility H2O: soluble 18.7 g/L at 16 °C | solubility H2O: soluble 18.7 g/L at 16 °C | solubility - | solubility - |
| Quality Level 200 | Quality Level 200 | Quality Level - | Quality Level 300 |
Packaging
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Lagerklasse
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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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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