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Sigma-Aldrich

Tetrahydro-4H-pyran-4-one

99%

Sinónimos:

4-Oxotetrahydropyran

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About This Item

Fórmula empírica (notación de Hill):
C5H8O2
Número de CAS:
29943-42-8
Peso molecular:
100.12
Beilstein:
106463
Número CE:
249-967-2
Número MDL:
MFCD00006581
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
24851869
NACRES:
NA.22
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Nivel de calidad

100

Ensayo

99%

Formulario

liquid

índice de refracción

n20/D 1.452 (lit.)

bp

166-166.5 °C (lit.)

densidad

1.084 g/mL at 25 °C (lit.)

grupo funcional

ether
ketone

cadena SMILES

O=C1CCOCC1

InChI

1S/C5H8O2/c6-5-1-3-7-4-2-5/h1-4H2

Clave InChI

JMJRYTGVHCAYCT-UHFFFAOYSA-N

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Pictogramas

Flame
GHS02

Palabra de señalización

Warning

Frases de peligro

H226

Consejos de prudencia

P210

Clasificaciones de peligro

Flam. Liq. 3

Código de clase de almacenamiento

3 - Flammable liquids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

131.0 °F - closed cup

Punto de inflamabilidad (°C)

55 °C - closed cup

Equipo de protección personal

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificados de análisis (COA)

Lot/Batch Number
SDBB1129
BCCC6559
BCCB4395
BCBT1417
BCBQ6678V

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Synthesis, 672-672 (1994)
Kun Huang et al.
The Journal of organic chemistry, 71(21), 8320-8323 (2006-10-10)
As the first example for the synthesis of optically active alpha-hydroxyaldehydes and alpha-hydroxyketones in ionic liquids, we applied RTILs into L-proline catalyzed direct enantioselective alpha-aminoxylation of both aldehydes and ketones successfully. This protocol features a number of advantages, such as
R K Anderson et al.
The Journal of antibiotics, 46(2), 331-342 (1993-02-01)
Syntheses are described for penicillins (4b approximately 4i, 5a and 5b) which possess a 6 beta-(2-heteroaryl-3-substituted)-propenamido side-chain of fixed geometry. In vitro results for these compounds against a range of Gram-positive and Gram-negative bacteria showed in most cases good stability
Bryan Ringstrand et al.
Beilstein journal of organic chemistry, 7, 386-393 (2011-04-23)
The methodology to prepare 3-substituted 1,5-dibromopentanes I and their immediate precursors, which include 3-substituted 1,5-pentanediols VII or 4-substituted tetrahydropyrans VIII, is surveyed. Such dibromides I are important intermediates in the preparation of liquid crystalline derivatives containing 6-membered heterocyclic rings. Four
Synthesis, 672-672 (1994)
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Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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.pdf

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