801291-55-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 801291-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,1,2,9 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 801291-55:
(8*8)+(7*0)+(6*1)+(5*2)+(4*9)+(3*1)+(2*5)+(1*5)=134
134 % 10 = 4
So 801291-55-4 is a valid CAS Registry Number.