872803-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 872803-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,8,0 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 872803-53:
(8*8)+(7*7)+(6*2)+(5*8)+(4*0)+(3*3)+(2*5)+(1*3)=187
187 % 10 = 7
So 872803-53-7 is a valid CAS Registry Number.