52421-93-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52421-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,4,2 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 52421-93:
(7*5)+(6*2)+(5*4)+(4*2)+(3*1)+(2*9)+(1*3)=99
99 % 10 = 9
So 52421-93-9 is a valid CAS Registry Number.