879720-77-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 879720-77-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,9,7,2 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 879720-77:
(8*8)+(7*7)+(6*9)+(5*7)+(4*2)+(3*0)+(2*7)+(1*7)=231
231 % 10 = 1
So 879720-77-1 is a valid CAS Registry Number.