291305-53-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 291305-53-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,1,3,0 and 5 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 291305-53:
(8*2)+(7*9)+(6*1)+(5*3)+(4*0)+(3*5)+(2*5)+(1*3)=128
128 % 10 = 8
So 291305-53-8 is a valid CAS Registry Number.