21084-26-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21084-26-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,8 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21084-26:
(7*2)+(6*1)+(5*0)+(4*8)+(3*4)+(2*2)+(1*6)=74
74 % 10 = 4
So 21084-26-4 is a valid CAS Registry Number.