21190-00-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21190-00-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,9 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21190-00:
(7*2)+(6*1)+(5*1)+(4*9)+(3*0)+(2*0)+(1*0)=61
61 % 10 = 1
So 21190-00-1 is a valid CAS Registry Number.