1287715-28-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1287715-28-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,7,7,1 and 5 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1287715-28:
(9*1)+(8*2)+(7*8)+(6*7)+(5*7)+(4*1)+(3*5)+(2*2)+(1*8)=189
189 % 10 = 9
So 1287715-28-9 is a valid CAS Registry Number.