877779-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 877779-98-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,7,7,7 and 9 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 877779-98:
(8*8)+(7*7)+(6*7)+(5*7)+(4*7)+(3*9)+(2*9)+(1*8)=271
271 % 10 = 1
So 877779-98-1 is a valid CAS Registry Number.