21705-60-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21705-60-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,7,0 and 5 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21705-60:
(7*2)+(6*1)+(5*7)+(4*0)+(3*5)+(2*6)+(1*0)=82
82 % 10 = 2
So 21705-60-2 is a valid CAS Registry Number.