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
283754
2(5H)-Furanone
98%
Synonyma:
γ-Crotonolactone, 2-Buten-1,4-olide
Vybrat velikost
| Vám/Skladová položka | Dostupnost | Cena |
|---|---|---|
1 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 2 290,00 Kč |
5 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 8 990,00 Kč |
O této položce
2 290,00 Kč
Quality Segment
assay
98%
form
liquid
refractive index
n20/D 1.469 (lit.)
bp
86-87 °C/12 mmHg (lit.)
mp
4-5 °C (lit.)
density
1.185 g/mL at 25 °C (lit.)
functional group
ester
storage temp.
2-8°C
SMILES string
O=C1OCC=C1
InChI
1S/C4H4O2/c5-4-2-1-3-6-4/h1-2H,3H2
InChI key
VIHAEDVKXSOUAT-UHFFFAOYSA-N
General description
Application
- synthesis of (+)-L-733,060, (+)-CP-99,994 and (2S,3R)-3-hydroxypipecolic acid[3]
- synthesis of 5-substituted 2(5H) furanones (γ-butenolides) via direct aldol reaction with aromatic aldehydes catalyzed by bifunctional aminothiourea and aminosquaramide organocatalysts[4]
- Michael addition reactions for synthesis of lignans
- three-component Michael-Aldol reactions with an aldehyde anda thiolate or carbanion
Packaging
1 of 1
Tato položka | |||
|---|---|---|---|
| assay 98% | assay 99% | assay 97% | assay 95% |
| refractive index n20/D 1.469 (lit.) | refractive index - | refractive index - | refractive index n20/D 1.443 (lit.) |
| bp 86-87 °C/12 mmHg (lit.) | bp 105 °C/0.5 mmHg (lit.) | bp - | bp 120-121 °C/18 mmHg (lit.) |
| storage temp. 2-8°C | storage temp. - | storage temp. - | storage temp. - |
| density 1.185 g/mL at 25 °C (lit.) | density - | density - | density 1.08 g/mL at 25 °C (lit.) |
| form liquid | form - | form - | form - |
Skladovací třída
10 - Combustible liquids
wgk
WGK 3
flash_point_f
213.8 °F - closed cup
flash_point_c
101 °C - closed cup
ppe
Eyeshields, Gloves, type ABEK (EN14387) respirator filter
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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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