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Ketenecarboxaldehyde, also known as pyruvaldehyde, is an organic compound with the chemical formula CH3COCHO. It is a colorless, highly reactive, and unstable liquid that readily polymerizes upon exposure to air. This aldehyde is an important intermediate in organic synthesis and is used in the production of various chemicals, such as pharmaceuticals, agrochemicals, and polymers. Ketenecarboxaldehyde is synthesized through the oxidation of acetaldehyde or the hydrolysis of acrolein, and it plays a crucial role in the metabolism of carbohydrates in living organisms as an intermediate in the glycolysis pathway. Due to its reactivity, it is typically handled under controlled conditions to prevent unwanted side reactions and ensure safety.

4484-43-9

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4484-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4484-43-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,8 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 4484-43:
(6*4)+(5*4)+(4*8)+(3*4)+(2*4)+(1*3)=99
99 % 10 = 9
So 4484-43-9 is a valid CAS Registry Number.

4484-43-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name Formylketen

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:4484-43-9 SDS

4484-43-9Downstream Products

4484-43-9Relevant academic research and scientific papers

Small Rings, 42. Attempts to Prepare Oxirenes via Photochemical Cycloreversions

Maier, Guenther,Sayrac, Tugmac,Reisenauer, Hans Peter

, p. 2202 - 2213 (2007/10/02)

Photochemically induced cycloreversions, which are ideally suited for the matrix isolation of cyclobutadienes, cannot be used for an analogous preparation and identification of oxirenes.In some cases ketenes are formed instead.

Small Rings, 41. Oxirene: Intermediate or Transition State? Matrix Irradiation of Diazoketones

Maier, Guenther,Reisenauer, Hans Peter,Sayrac, Tugmac

, p. 2192 - 2201 (2007/10/02)

On irradiation of diazoketones - even of those which do not undergo a Wolff rearrangement under standard conditions - in an argon matrix at 10 K oxirenes (or acylcarbenes) cannot be detected directly.

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