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
Melting point standard 235-237°C
analytical standard
Synonym(s):
Caffeine, 1,3,7-Trimethylxanthine
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$28.24
$66.96
About This Item
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Product Name
Melting point standard 235-237°C, analytical standard
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
SMILES string
CN1C(=O)N(C)c2ncn(C)c2C1=O
grade
analytical standard
shelf life
limited shelf life, expiry date on the label
mp
234-236.5 °C (lit.)
235-237 °C (±0.3°C)
application(s)
food and beverages
pharmaceutical
format
neat
Quality Level
Gene Information
human ... ADORA1(134), ADORA2A(135), ADORA2B(136), ADORA3(140)
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This Item | 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 |
Application
Features and Benefits
- 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
General description
Other Notes
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
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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