1171853-80-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1171853-80-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,1,8,5 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1171853-80:
(9*1)+(8*1)+(7*7)+(6*1)+(5*8)+(4*5)+(3*3)+(2*8)+(1*0)=157
157 % 10 = 7
So 1171853-80-7 is a valid CAS Registry Number.