1177421-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1177421-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,7,4,2 and 1 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1177421-80:
(9*1)+(8*1)+(7*7)+(6*7)+(5*4)+(4*2)+(3*1)+(2*8)+(1*0)=155
155 % 10 = 5
So 1177421-80-5 is a valid CAS Registry Number.