31183-97-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31183-97-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,8 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 31183-97:
(7*3)+(6*1)+(5*1)+(4*8)+(3*3)+(2*9)+(1*7)=98
98 % 10 = 8
So 31183-97-8 is a valid CAS Registry Number.