54987-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54987-90-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,8 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 54987-90:
(7*5)+(6*4)+(5*9)+(4*8)+(3*7)+(2*9)+(1*0)=175
175 % 10 = 5
So 54987-90-5 is a valid CAS Registry Number.