1008-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1008-31-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,0,0 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1008-31:
(6*1)+(5*0)+(4*0)+(3*8)+(2*3)+(1*1)=37
37 % 10 = 7
So 1008-31-7 is a valid CAS Registry Number.