1781547-87-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1781547-87-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,7,8,1,5,4 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1781547-87:
(9*1)+(8*7)+(7*8)+(6*1)+(5*5)+(4*4)+(3*7)+(2*8)+(1*7)=212
212 % 10 = 2
So 1781547-87-2 is a valid CAS Registry Number.