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
742724
Dimethyl (1-diazo-2-oxopropyl)phosphonate solution
~10% in acetonitrile (H-NMR), ≥96% (HPLC)
Sinonimo/i:
Bestmann-Ohira Reagent, Dimethyl (1-azoacetonyl)phosphonate solution, Dimethyl (acetyldiazomethyl)phosphonate solution
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About This Item
Prodotti consigliati
Saggio
≥96% (HPLC)
Stato
liquid
Impiego in reazioni chimiche
reaction type: C-C Bond Formation
Concentrazione
~10% in acetonitrile (H-NMR)
Indice di rifrazione
n20/D 1.352-1.354
Densità
0.800-0.850 g/mL at 20 °C
Gruppo funzionale
ketone
phosphonate
Temperatura di conservazione
2-8°C
Stringa SMILE
COP(=O)(OC)C(=[N+]=[N-])C(C)=O
InChI
1S/C5H9N2O4P/c1-4(8)5(7-6)12(9,10-2)11-3/h1-3H3
SQHSJJGGWYIFCD-UHFFFAOYSA-N
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Categorie correlate
Applicazioni
- Ethynyl compounds (alkynes) from aldehydes.[1]
- Isoquinoline and pyridine N-oxides by cyclization with oximes in the presence of Rh catalyst.[2]
- Dimethyl(diazomethyl)phosphonate through methanolysis, which is further employed as a reagent in the synthesis of enol ethers or alkynes.[3]
- Five-member heterocyclic scaffolds of pyrazoles, triazoles, and oxazoles via cycloaddition reaction and multicomponent reaction.[4]
Avvertenze
Danger
Indicazioni di pericolo
Classi di pericolo
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2
Codice della classe di stoccaggio
3 - Flammable liquids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
35.6 °F
Punto d’infiammabilità (°C)
2 °C
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Protocolli
Acetylene chemistry's versatile applications from organic synthesis to bioorganic chemistry demand efficient synthesis methods.
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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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