2187-25-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2187-25-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,8 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2187-25:
(6*2)+(5*1)+(4*8)+(3*7)+(2*2)+(1*5)=79
79 % 10 = 9
So 2187-25-9 is a valid CAS Registry Number.