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281832

Sigma-Aldrich

Mesityloxid

technical grade, 90%

Synonym(e):

4-Methyl-3-penten-2-on

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About This Item

Lineare Formel:
(CH3)2C=CHCOCH3
CAS-Nummer:
141-79-7
Molekulargewicht:
98.14
Beilstein:
1361550
EG-Nummer:
205-502-5
MDL-Nummer:
MFCD00008900
UNSPSC-Code:
12352100
PubChem Substanz-ID:
24856998
NACRES:
NA.22
Preise und Verfügbarkeit sind derzeit nicht verfügbar.

Qualität

technical grade

Qualitätsniveau

100

Assay

90%

Form

liquid

Brechungsindex

n20/D 1.442 (lit.)

bp

130 °C (lit.)

mp (Schmelzpunkt)

-41.5 °C (lit.)

Dichte

0.858 g/mL at 25 °C (lit.)

Funktionelle Gruppe

ketone

SMILES String

C\C(C)=C\C(C)=O

InChI

1S/C6H10O/c1-5(2)4-6(3)7/h4H,1-3H3

InChIKey

SHOJXDKTYKFBRD-UHFFFAOYSA-N

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Verwandte Kategorien

Allgemeine Beschreibung

Zinc chloride-catalyzed condensation of mesityl oxide with ethyl acetoacetate has been reported[1].

Anwendung

Mesityl oxide has been used:
  • in the synthesis of 2,3,4,5-tetrahydro-1,3,3-trimethyldipyrrin, a crucial building block in the rational synthesis of chlorins and oxochlorins[2]
  • as neutral marker in the preparation of imidazole-coated capillary column for electrophoresis[3]

Piktogramme

FlameSkull and crossbones
GHS02,GHS06

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 3 Inhalation - Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Zielorgane

Respiratory system

Lagerklassenschlüssel

3 - Flammable liquids

WGK

WGK 1

Flammpunkt (°F)

87.8 °F - closed cup

Flammpunkt (°C)

31 °C - closed cup

Persönliche Schutzausrüstung

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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
0000404597
0000404597
SHBQ6492
SHBP9463
SHBP4761

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3-Methyl-3-penten-2-on technical, ≥90% (GC)

Sigma-Aldrich

68567

3-Methyl-3-penten-2-on

4-Hydroxy-4-methyl-2-pentanon analytical standard

Supelco

78891

4-Hydroxy-4-methyl-2-pentanon

Natriummethoxid -Lösung 25 wt. % in methanol

Sigma-Aldrich

156256

Natriummethoxid -Lösung

Isophoron 97%

Sigma-Aldrich

I18709

Isophoron

3-Penten-2-on 70%

Sigma-Aldrich

145017

3-Penten-2-on

Marcin Ptaszek et al.
Organic process research & development, 9(5), 651-659 (2005-01-01)
2,3,4,5-Tetrahydro-1,3,3-trimethyldipyrrin (1) is a crucial building block in the rational synthesis of chlorins and oxochlorins. The prior 5-step synthesis of 1 from pyrrole-2-carboxaldehyde (2) employed relatively simple and well-known reactions yet suffered from several drawbacks, including limited scale (>/= 0.5
C Y Liu et al.
Journal of chromatography. A, 897(1-2), 383-392 (2000-12-29)
An imidazole-coated capillary column for electrophoresis has been prepared by means of organosilanization. With mesityl oxide as neutral marker, the results indicated that the electroosmotic flow of the bonded phase displays a dramatic difference in pH dependence in comparison with
Condensation of mesityl oxide with acetoacetic ester.
Surmatis JD, et al.
The Journal of Organic Chemistry, 35(4), 1053-1056 (1970)
Christian Starkenmann
Journal of agricultural and food chemistry, 51(24), 7146-7155 (2003-11-13)
Cysteine conjugates, resulting from the addition of cysteine to alpha,beta-unsaturated carbonyl compounds, are important precursors of odorant sulfur compounds in food flavors. The aim of this work was to better understand this chemistry in the light of the unexpected double
Scott E Denmark et al.
The Journal of organic chemistry, 71(4), 1668-1676 (2006-02-14)
The mechanism of the formation of substituted quinolines from anilines and alpha,beta-unsaturated ketones has been studied by the use of 13C-labeled ketones in cross-over experiments. In the reaction of doubly labeled 13C(2,4) mesityl oxide, a 100% scrambling of the label
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 Antwort

    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 Antwort

    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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