717916-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 717916-83-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,9,1 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 717916-83:
(8*7)+(7*1)+(6*7)+(5*9)+(4*1)+(3*6)+(2*8)+(1*3)=191
191 % 10 = 1
So 717916-83-1 is a valid CAS Registry Number.