21859-30-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21859-30-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21859-30:
(7*2)+(6*1)+(5*8)+(4*5)+(3*9)+(2*3)+(1*0)=113
113 % 10 = 3
So 21859-30-3 is a valid CAS Registry Number.