1807505-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1807505-31-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,8,0,7,5,0 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1807505-31:
(9*1)+(8*8)+(7*0)+(6*7)+(5*5)+(4*0)+(3*5)+(2*3)+(1*1)=162
162 % 10 = 2
So 1807505-31-2 is a valid CAS Registry Number.