21489-86-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21489-86-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,8 and 9 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21489-86:
(7*2)+(6*1)+(5*4)+(4*8)+(3*9)+(2*8)+(1*6)=121
121 % 10 = 1
So 21489-86-1 is a valid CAS Registry Number.