21250-88-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21250-88-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,5 and 0 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21250-88:
(7*2)+(6*1)+(5*2)+(4*5)+(3*0)+(2*8)+(1*8)=74
74 % 10 = 4
So 21250-88-4 is a valid CAS Registry Number.