97924-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97924-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,9,2 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97924-21:
(7*9)+(6*7)+(5*9)+(4*2)+(3*4)+(2*2)+(1*1)=175
175 % 10 = 5
So 97924-21-5 is a valid CAS Registry Number.