659719-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 659719-70-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,9,7,1 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 659719-70:
(8*6)+(7*5)+(6*9)+(5*7)+(4*1)+(3*9)+(2*7)+(1*0)=217
217 % 10 = 7
So 659719-70-7 is a valid CAS Registry Number.