2025-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2025-21-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,0,2 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2025-21:
(6*2)+(5*0)+(4*2)+(3*5)+(2*2)+(1*1)=40
40 % 10 = 0
So 2025-21-0 is a valid CAS Registry Number.