311812-97-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 311812-97-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,1,8,1 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 311812-97:
(8*3)+(7*1)+(6*1)+(5*8)+(4*1)+(3*2)+(2*9)+(1*7)=112
112 % 10 = 2
So 311812-97-2 is a valid CAS Registry Number.