Cas 139166-39-5,Cyclohexanol, 2-(2-propenylidene)-, acetate, (E)-

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Check Digit Verification of cas no

The CAS Registry Mumber 139166-39-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,6 and 6 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139166-39:
(8*1)+(7*3)+(6*9)+(5*1)+(4*6)+(3*6)+(2*3)+(1*9)=145
145 % 10 = 5
So 139166-39-5 is a valid CAS Registry Number.

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139166-39-5Relevant academic research and scientific papers

Thermal Isomerization of a Vinylcyclobutene to a Cyclohexadiene

Paul, Gitendra C.,Gajewski, Joseph J.

, p. 1970 - 1973 (1992)

Above 100 deg C 5-methylenespironon-1-ene, 1, undergoes cyclobutene ring opening to (E)-triene 2 and apparent 1,3-shift to a hexahydronaphthalene, 3, in a 3 to 1 ratio. (E)-triene 2 gives 3 in a competitive reaction.The activation energies for all th

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