871715-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871715-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,7,1 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 871715-72:
(8*8)+(7*7)+(6*1)+(5*7)+(4*1)+(3*5)+(2*7)+(1*2)=189
189 % 10 = 9
So 871715-72-9 is a valid CAS Registry Number.