977-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 977-89-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,7 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 977-89:
(5*9)+(4*7)+(3*7)+(2*8)+(1*9)=119
119 % 10 = 9
So 977-89-9 is a valid CAS Registry Number.