79974-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 79974-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,9,7 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 79974-21:
(7*7)+(6*9)+(5*9)+(4*7)+(3*4)+(2*2)+(1*1)=193
193 % 10 = 3
So 79974-21-3 is a valid CAS Registry Number.