191987-11-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191987-11-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,8 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 191987-11:
(8*1)+(7*9)+(6*1)+(5*9)+(4*8)+(3*7)+(2*1)+(1*1)=178
178 % 10 = 8
So 191987-11-8 is a valid CAS Registry Number.