899721-24-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 899721-24-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,9,7,2 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 899721-24:
(8*8)+(7*9)+(6*9)+(5*7)+(4*2)+(3*1)+(2*2)+(1*4)=235
235 % 10 = 5
So 899721-24-5 is a valid CAS Registry Number.