154503-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 154503-91-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,5,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 154503-91:
(8*1)+(7*5)+(6*4)+(5*5)+(4*0)+(3*3)+(2*9)+(1*1)=120
120 % 10 = 0
So 154503-91-0 is a valid CAS Registry Number.