779989-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 779989-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,9,9,8 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 779989-20:
(8*7)+(7*7)+(6*9)+(5*9)+(4*8)+(3*9)+(2*2)+(1*0)=267
267 % 10 = 7
So 779989-20-7 is a valid CAS Registry Number.