1275517-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1275517-81-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,5,5,1 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1275517-81:
(9*1)+(8*2)+(7*7)+(6*5)+(5*5)+(4*1)+(3*7)+(2*8)+(1*1)=171
171 % 10 = 1
So 1275517-81-1 is a valid CAS Registry Number.