191677-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191677-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,6,7 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 191677-77:
(8*1)+(7*9)+(6*1)+(5*6)+(4*7)+(3*7)+(2*7)+(1*7)=177
177 % 10 = 7
So 191677-77-7 is a valid CAS Registry Number.