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Sigma-Aldrich

Trimethylorthoacetat

99%

Synonym(e):

Trimethyl-orthoacetat

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CHF 166.00

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100 ML
CHF 53.30
500 ML
CHF 166.00

About This Item

Lineare Formel:
CH3C(OCH3)3
CAS-Nummer:
1445-45-0
Molekulargewicht:
120.15
Beilstein:
1098338
EG-Nummer:
215-892-9
MDL-Nummer:
MFCD00008477
UNSPSC-Code:
12352100
PubChem Substanz-ID:
24854275
NACRES:
NA.22

CHF 53.30

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Qualitätsniveau

200

Assay

99%

Form

liquid

Brechungsindex

n20/D 1.388 (lit.)

bp

107-109 °C (lit.)

Dichte

0.944 g/mL at 25 °C (lit.)

Funktionelle Gruppe

ether

SMILES String

COC(C)(OC)OC

InChI

1S/C5H12O3/c1-5(6-2,7-3)8-4/h1-4H3

InChIKey

HDPNBNXLBDFELL-UHFFFAOYSA-N

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Allgemeine Beschreibung

Kinetics and mechanism of gas-phase elimination of trimethyl orthoacetate has been examined over the temperature range of 310-369°C and pressure range of 50-130Torr[1].

Trimethyl orthoacetate is used to synthesize acrylonitrile intermediates via reaction with alcohols followed by Knoevenagel condensation.[2]

Anwendung

Trimethyl orthoacetate has been used in the preparation of 2-amino-9-(3-acyloxymethyl-4-alkoxycarbonyloxybut-1-yl)purines and 2-amino-9-(3-alkoxycarbonyl-oxymethyl-4-alkoxycarbonyloxybut -1-yl)purines[3].

Piktogramme

FlameExclamation mark
GHS02,GHS07

Signalwort

Danger

Gefahreneinstufungen

Eye Irrit. 2 - Flam. Liq. 2 - Skin Sens. 1B

Lagerklassenschlüssel

3 - Flammable liquids

WGK

WGK 1

Flammpunkt (°F)

55.4 °F - closed cup

Flammpunkt (°C)

13 °C - closed cup

Persönliche Schutzausrüstung

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

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
BCCJ4429
WXBD1263V
WXBC8654V
WXBC0171V
WXBB6768V

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Die Dokumentenbibliothek aufrufen

Transesterification of trimethyl orthoacetate: an efficient protocol for the synthesis of 4-alkoxy-2-aminothiophene-3-carbonitriles
Rao KV, et al.
Tetrahedron Letters, 54, 1274-1278 (2013)
Takahide Murakami et al.
Acta biomaterialia, 84, 257-267 (2018-12-12)
Postoperative adhesion is a relevant clinical problem that causes a variety of clinical complications after abdominal surgery. The objective of this study is to develop a liquid-type antiadhesion agent and evaluate its efficacy in preventing tissue adhesion in a rat
D K Kim et al.
Bioorganic & medicinal chemistry, 7(8), 1715-1725 (1999-09-11)
A series of 2-amino-9-(3-acyloxymethyl-4-alkoxycarbonyloxybut-1-yl)purin es (1-8) and 2-amino-9-(3-alkoxycarbonyl-oxymethyl-4-alkoxycarbonyloxybut -1-yl)purines (9-12) were synthesized as potential prodrugs of penciclovir. Treatment of 6-deoxypenciclovir with trimethyl orthoacetate or triethyl orthopropionate (1.2 equiv) in DMF in the presence of p-TsOH.H2O (0.1 equiv) followed by quenching
Edgar Márquez et al.
The journal of physical chemistry. A, 112(47), 12140-12142 (2008-11-01)
The gas-phase elimination kinetics of the title compounds have been examined over the temperature range of 310-369 degrees C and pressure range of 50-130 Torr. The reactions, in seasoned vessels, are homogeneous, unimolecular, and follow a first-order rate law. The

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  1. 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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  2. 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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