857766-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 857766-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,7,6 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 857766-87:
(8*8)+(7*5)+(6*7)+(5*7)+(4*6)+(3*6)+(2*8)+(1*7)=241
241 % 10 = 1
So 857766-87-1 is a valid CAS Registry Number.