31798-97-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31798-97-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,7,9 and 8 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 31798-97:
(7*3)+(6*1)+(5*7)+(4*9)+(3*8)+(2*9)+(1*7)=147
147 % 10 = 7
So 31798-97-7 is a valid CAS Registry Number.