291291-92-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291291-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,2,9 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 291291-92:
(8*2)+(7*9)+(6*1)+(5*2)+(4*9)+(3*1)+(2*9)+(1*2)=154
154 % 10 = 4
So 291291-92-4 is a valid CAS Registry Number.