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198242

Sigma-Aldrich

Tetrahydro-4H-pyran-4-one

99%

Sinônimo(s):

4-Oxotetrahydropyran

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1 G
R$ 339,00
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R$ 1.096,00

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1 G
R$ 339,00
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R$ 1.096,00

About This Item

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

R$ 339,00

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Nível de qualidade

100

Ensaio

99%

Formulário

liquid

índice de refração

n20/D 1.452 (lit.)

p.e.

166-166.5 °C (lit.)

densidade

1.084 g/mL at 25 °C (lit.)

grupo funcional

ether
ketone

cadeia de caracteres SMILES

O=C1CCOCC1

InChI

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

chave InChI

JMJRYTGVHCAYCT-UHFFFAOYSA-N

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Categorias relacionadas

Pictogramas

Flame
GHS02

Palavra indicadora

Warning

Frases de perigo

H226

Declarações de precaução

P210

Classificações de perigo

Flam. Liq. 3

Código de classe de armazenamento

3 - Flammable liquids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

131.0 °F - closed cup

Ponto de fulgor (°C)

55 °C - closed cup

Equipamento de proteção individual

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

Escolha uma das versões mais recentes:

Certificados de análise (COA)

Lot/Batch Number
SDBB1129
BCCC6559
BCCB4395
BCBT1417
BCBQ6678V

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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
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
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
Synthesis, 672-672 (1994)
Tetrahedron Letters, 33, 7701-7701 (1992)
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Questions

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  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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