1156981-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1156981-53-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,5,6,9,8 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1156981-53:
(9*1)+(8*1)+(7*5)+(6*6)+(5*9)+(4*8)+(3*1)+(2*5)+(1*3)=181
181 % 10 = 1
So 1156981-53-1 is a valid CAS Registry Number.