91527-55-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91527-55-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,2 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91527-55:
(7*9)+(6*1)+(5*5)+(4*2)+(3*7)+(2*5)+(1*5)=138
138 % 10 = 8
So 91527-55-8 is a valid CAS Registry Number.
91527-55-8Relevant articles and documents
THERMAL CYCLOADDITION OF CARBONYL COMPOUNDS TO A STABLE CYCLOBUTADIENE
Fink, Juergen,Regitz, Manfred
, p. 1711 - 1714 (1984)
In contrast to chlorides which undergo addition to 1 to form cyclobutene derivatives 4, aldehydes react with the same antiaromatic starting compound 1 to give the -cycloaddition product 5.Activated ketones such as 1,1,1-trifluoroacetone, biacetyl, an