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Dispiro[2.1.2.1]octane-4,8-dione, 1,1,2,2,6,6,7,7-octamethyl- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

81359-25-3

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81359-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81359-25-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,5 and 9 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81359-25:
(7*8)+(6*1)+(5*3)+(4*5)+(3*9)+(2*2)+(1*5)=133
133 % 10 = 3
So 81359-25-3 is a valid CAS Registry Number.

81359-25-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,1,2,2,6,6,7,7-octamethyldispiro[2.1.2<sup>5</sup>.1<sup>3</sup>]octane-4,8-dione

1.2 Other means of identification

Product number -
Other names Dispiro[2.1.2.1]octane-4,8-dione,1,1,2,2,6,6,7,7-octamethyl

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:81359-25-3 SDS

81359-25-3Downstream Products

81359-25-3Relevant academic research and scientific papers

Reaction of Triplet Carbonyl Carbene with Olefins

Parker, Garth,Wiseman, Douglas,Wintner, Claude,MacKay, Colin

, p. 4494 - 4497 (1984)

The gas-phase reaction of C2O(3Σ) with 2,3-dimethyl-2-butene produces 1,1,2,2,6,6,7,7-octamethyldispirooctane-4,8-dione and 2,2,3,3-tetramethylcyclopropanecarboxylic acid as major products rather than the allenic product characteristic of the reaction with simpler substrates.The positive identification of these molecules provides strong evidence for prior formation of the previously postulated cyclopropylideneketene.Further, the rate-determining step for reaction of C2O(3Σ) with the substrate cannot be elimination of CO as has been postulated on the basis of calculations.

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