299405-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 299405-21-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,9,4,0 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 299405-21:
(8*2)+(7*9)+(6*9)+(5*4)+(4*0)+(3*5)+(2*2)+(1*1)=173
173 % 10 = 3
So 299405-21-3 is a valid CAS Registry Number.