1287721-11-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1287721-11-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,7,7,2 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1287721-11:
(9*1)+(8*2)+(7*8)+(6*7)+(5*7)+(4*2)+(3*1)+(2*1)+(1*1)=172
172 % 10 = 2
So 1287721-11-2 is a valid CAS Registry Number.