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
41019
Schmelzpunktstandard 235-237°C
analytical standard
Synonym(e):
Koffein, 1,3,7-Trimethylxanthin
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CHF 28.10
CHF 67.60
Über diesen Artikel
Fortfahren mit
Qualität
analytical standard
Qualitätsniveau
Haltbarkeit
limited shelf life, expiry date on the label
mp (Schmelzpunkt)
234-236.5 °C (lit.)
235-237 °C (±0.3°C)
Anwendung(en)
food and beverages
pharmaceutical
Format
neat
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
InChIKey
RYYVLZVUVIJVGH-UHFFFAOYSA-N
Angaben zum Gen
human ... ADORA1(134), ADORA2A(135), ADORA2B(136), ADORA3(140)
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Dieser Artikel | PHR1095 | 1086006 | 75035 |
|---|---|---|---|
| format neat | format neat | format neat | format neat |
| mp 234-236.5 °C (lit.), 235-237 °C (±0.3°C) | mp ~Approximately 237 °C, 234-236.5 °C (lit.) | mp 234-236.5 °C (lit.) | mp 234-236.5 °C (lit.) |
| grade analytical standard | grade certified reference material, pharmaceutical secondary standard | grade pharmaceutical primary standard | grade analytical standard |
| application(s) food and beverages | application(s) pharmaceutical (small molecule) | application(s) pharmaceutical (small molecule) | application(s) cleaning products |
| shelf life limited shelf life, expiry date on the label | shelf life - | shelf life - | shelf life limited shelf life, expiry date on the certificate and label |
| Quality Level 100 | Quality Level 300 | Quality Level - | Quality Level 100 |
Allgemeine Beschreibung
Anwendung
Leistungsmerkmale und Vorteile
- Melting point calibration standard traceable to primary standards (LGC, London)
- Grade: Analytical Standard
- Standard deviation up to ± 0.3 °C
- Provided with certificates of analysis and safety data sheet
Sonstige Hinweise
Signalwort
Warning
H-Sätze
Gefahreneinstufungen
Acute Tox. 4 Oral
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
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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