18979-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18979-21-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,7 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18979-21:
(7*1)+(6*8)+(5*9)+(4*7)+(3*9)+(2*2)+(1*1)=160
160 % 10 = 0
So 18979-21-0 is a valid CAS Registry Number.