872807-71-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 872807-71-1 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 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 872807-71:
(8*8)+(7*7)+(6*2)+(5*8)+(4*0)+(3*7)+(2*7)+(1*1)=201
201 % 10 = 1
So 872807-71-1 is a valid CAS Registry Number.