677277-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 677277-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,7,2,7 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 677277-87:
(8*6)+(7*7)+(6*7)+(5*2)+(4*7)+(3*7)+(2*8)+(1*7)=221
221 % 10 = 1
So 677277-87-1 is a valid CAS Registry Number.