16206-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16206-21-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,2,0 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16206-21:
(7*1)+(6*6)+(5*2)+(4*0)+(3*6)+(2*2)+(1*1)=76
76 % 10 = 6
So 16206-21-6 is a valid CAS Registry Number.