54921-02-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54921-02-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,9,2 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 54921-02:
(7*5)+(6*4)+(5*9)+(4*2)+(3*1)+(2*0)+(1*2)=117
117 % 10 = 7
So 54921-02-7 is a valid CAS Registry Number.