803684-85-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 803684-85-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,3,6,8 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 803684-85:
(8*8)+(7*0)+(6*3)+(5*6)+(4*8)+(3*4)+(2*8)+(1*5)=177
177 % 10 = 7
So 803684-85-7 is a valid CAS Registry Number.