27004-28-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27004-28-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,0,0 and 4 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 27004-28:
(7*2)+(6*7)+(5*0)+(4*0)+(3*4)+(2*2)+(1*8)=80
80 % 10 = 0
So 27004-28-0 is a valid CAS Registry Number.
27004-28-0Relevant articles and documents
An efficient procedure for the preparation of cyclic ketals and thioketals catalyzed by zirconium sulfophenyl phosphonate
Curini,Epifano,Marcotullio,Rosati
, p. 1182 - 1184 (2007/10/03)
A convenient method for the preparation of cyclic ketals and thioketals using zirconium sulfophenyl phosphonate as catalyst is described.