21017-39-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21017-39-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,1 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21017-39:
(7*2)+(6*1)+(5*0)+(4*1)+(3*7)+(2*3)+(1*9)=60
60 % 10 = 0
So 21017-39-0 is a valid CAS Registry Number.