197709-11-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 197709-11-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,0 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 197709-11:
(8*1)+(7*9)+(6*7)+(5*7)+(4*0)+(3*9)+(2*1)+(1*1)=178
178 % 10 = 8
So 197709-11-8 is a valid CAS Registry Number.