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1,2,4,5-Tetra-tert-butyltricyclo<2.1.0.02,5>pentan-3-on is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

66809-03-8

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66809-03-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66809-03-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,0 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 66809-03:
(7*6)+(6*6)+(5*8)+(4*0)+(3*9)+(2*0)+(1*3)=148
148 % 10 = 8
So 66809-03-8 is a valid CAS Registry Number.

66809-03-8Relevant academic research and scientific papers

Small Rings, 38. Tetra-tert-butyltetrahedrane

Maier, Guenther,Pfriem, Stephan,Schaefer, Ulrich,Malsch, Klaus-Dieter,Matusch, Rudolf

, p. 3965 - 3987 (2007/10/02)

The first synthesis of a tetrahedrane stabilized by sterically demanding substituents is described.Tetrahedrane 37 originates from irradiation of tetra-tert-butylcyclopentadienone (26), which can be prepared starting from the already known cyclopentadienone 5.It forms colourless stable crystals.At 135 deg C tetrahedrane 37 valenceisomerizes to the corresponding cyclobutadiene 36.This reaction can be reversed photochemically.

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