31509-82-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31509-82-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,5,0 and 9 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 31509-82:
(7*3)+(6*1)+(5*5)+(4*0)+(3*9)+(2*8)+(1*2)=97
97 % 10 = 7
So 31509-82-7 is a valid CAS Registry Number.