19688-17-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19688-17-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,8 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19688-17:
(7*1)+(6*9)+(5*6)+(4*8)+(3*8)+(2*1)+(1*7)=156
156 % 10 = 6
So 19688-17-6 is a valid CAS Registry Number.