102017-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102017-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,0,1 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 102017-04:
(8*1)+(7*0)+(6*2)+(5*0)+(4*1)+(3*7)+(2*0)+(1*4)=49
49 % 10 = 9
So 102017-04-9 is a valid CAS Registry Number.