21160-16-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21160-16-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,6 and 0 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21160-16:
(7*2)+(6*1)+(5*1)+(4*6)+(3*0)+(2*1)+(1*6)=57
57 % 10 = 7
So 21160-16-7 is a valid CAS Registry Number.