1531-97-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1531-97-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,3 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1531-97:
(6*1)+(5*5)+(4*3)+(3*1)+(2*9)+(1*7)=71
71 % 10 = 1
So 1531-97-1 is a valid CAS Registry Number.