1156542-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1156542-80-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,6,5,4 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1156542-80:
(9*1)+(8*1)+(7*5)+(6*6)+(5*5)+(4*4)+(3*2)+(2*8)+(1*0)=151
151 % 10 = 1
So 1156542-80-1 is a valid CAS Registry Number.